Music Theory

Begin with pitch, rhythm, and notation. Build intervals and scales into chords, harmony, texture, and form; then connect the vocabulary to instruments, performance, and musical systems.

Sound, Pitch, and Rhythm

Distinguish pitch, interval, scale, beat, rhythm, and meter.

Musical Sound and Its Organization

• music — Music is the art form organized by pitch, rhythm, harmony, and melody, and many philosophers have treated it as the most abstract art. Clues often mention Plato, Schopenhauer, Nietzsche, Adorno, the Mozart effect, and debates over serious versus popular forms.
  • electronic instruments
    • Theremin — The theremin is an early electronic instrument played without touching it, using two antennae to control pitch and volume. It is named for Russian inventor Léon Theremin and is also called the thereminvox. Clara Rockmore was its most famous virtuoso, and it is famous in pieces by the Beach Boys, Shostakovich, Martinů, Grainger, and Aho.
  • Indian string instruments
    • Tambura — The tambura is a fretless Indian chordophone with four strings that produces a continuous drone. It is often used as a harmonic background instrument for sitar or vina performances. Its buzzing timbre comes from silk placed near the bridge, and it may appear in larger or smaller forms.
• Music theory — Music theory studies the organization of sound, harmony, rhythm, pitch, and form. Its history includes Pythagorean ratio-based approaches to scales and later work on notation, polyphony, and temperament.

Pitch and Scales

• Octave — 12 semitones; the interval between two pitches with a frequency ratio of 2:1; they share the same pitch class. It spans eight scale degrees and is traditionally one of the consonant intervals labeled perfect. In notation it can be marked as P8.
  • one octave — An octave is the musical interval between notes whose frequencies differ by a factor of two. It spans twelve semitones and is the widest spacing normally allowed between soprano and alto voices.

• Semitone (half step) — the smallest interval in Western equal temperament; the distance between two adjacent keys on a piano.

• Whole tone (whole step) — two semitones.

• Chromatic scale — all 12 semitones within an octave; no tonal center. It is the kind of scale suggested by passages like Rimsky-Korsakov’s Flight of the Bumblebee and Debussy’s Prelude to the Afternoon of a Faun.

• Major scale — seven-note scale following the interval pattern W-W-H-W-W-W-H; characterized by a bright, stable sound.

• Natural minor scale (Aeolian mode) — pattern W-H-W-W-H-W-W; darker character; the relative minor shares a key signature with its relative major (3 semitones higher).

• Harmonic minor — natural minor with a raised 7th degree; creates a leading tone and an augmented second between scale degrees 6 and 7. It is contrasted with natural minor and melodic minor.
  • G, D — The harmonic minor scale root notes referred to here are G and D. They are the scale roots whose forms produce the characteristic augmented second in harmonic minor.

• Melodic minor — raises both 6th and 7th degrees ascending; reverts to natural minor descending.

• Concert pitch — the standard reference pitch to which all instruments in an ensemble tune; internationally standardized as A4 = 440 Hz. Transposing instruments (e.g., B♭ clarinet) sound at a different pitch than written, so parts are transposed to match concert pitch. It is the pitch other instruments match when an orchestra tunes, often beginning with the oboe.

• Overtone series (harmonic series) — the natural sequence of pitches produced above a fundamental frequency when a string or air column vibrates; the partials are integer multiples of the fundamental (f, 2f, 3f, 4f…), producing successively smaller intervals; the series underlies consonance/dissonance, timbre, and the origins of tonal harmony.

• Parallel major/minor — share the same tonic (e.g., C major and C minor).

• Relative major/minor — share the same key signature (e.g., C major and A minor).

• Scale degree names — 1 tonic, 2 supertonic, 3 mediant, 4 subdominant, 5 dominant, 6 submediant, 7 leading tone (or subtonic if one semitone below the octave in minor).
  • scale degrees
    • mediant — The mediant is the third scale degree in a diatonic scale. In harmony, it helps determine whether a triad sounds major or minor, and the term also appears in the phrase chromatic mediant.
  • Leading tone — the 7th scale degree when it is one semitone below the tonic; creates strong resolution upward. In Neo-Riemannian theory, it also names the exchange transformation, one of the three basic chord moves alongside the relative and parallel. It is the scale degree diminished in major keys.

Modes

• Modes — Modes are musical scale patterns, such as Dorian, Phrygian, Lydian, and Mixolydian, that organize pitches by a characteristic interval pattern. They are especially associated with modal jazz, including Miles Davis’s Kind of Blue.

  • modes — Modes are repeating patterns or forms, and in music they are scale types such as Dorian, Lydian, and Phrygian. The term also appears in physics and optics for normal modes, guided modes, and transverse electromagnetic modes.

  • Modes and church modes
    • Phrygian mode — Phrygian mode is the church mode built on the third degree of the major scale and is essentially a natural minor scale with a flattened second. It is especially associated with Iberian and flamenco-influenced music, and can be heard by playing the white notes from E to E on a piano.

  • Ionian — identical to the major scale; bright and stable.

  • Dorian — like natural minor with a raised 6th; common in jazz and folk.

  • Phrygian — like natural minor with a lowered 2nd; dark, Spanish-influenced character. In common-practice theory it is the mode starting on the third degree of a major scale, and in flamenco it appears in forms such as soleares and bulerías; it is associated with the Andalusian cadence.

  • Lydian — like major with a raised 4th; dreamy, ethereal quality.

  • Mixolydian — like major with a lowered 7th; common in rock and folk. It is used in Japanese modal systems and in Greek music theory, where Aristoxenus distinguished hyper, high, and low forms of it.

  • Aeolian — the natural minor scale.

  • Locrian — like natural minor with a lowered 2nd and 5th; rarely used as a tonal center due to the diminished fifth above the root.
• modes

  • Ionian mode — The Ionian mode is another name for the major scale. On C it matches C major, and on the piano it corresponds to the white keys starting from C.

  • musical modes — Musical modes are scale systems defined by characteristic finals, ambitus, and note patterns. They include the Gregorian church modes and Greek names such as Dorian, Phrygian, Lydian, and Mixolydian. Clues also connect them to jazz theory, maqams, and George Russell’s Lydian Chromatic Concept of Tonal Organization.

  • church modes
    • diatonic modes — Diatonic modes are the church-mode pitch collections built from the notes of the diatonic scale, such as Dorian and Lydian. Renaissance music theory often organized melody around these modes, and modern clues frequently describe them as the white-key scales starting on different degrees.

  • Dorian mode — The Dorian mode is a minor-sounding musical mode with a raised sixth, often described as the white keys from D to D. It appears in jazz and Latin repertoire such as Miles Davis’s “So What” and Santana’s “Oye Como Va.”

  • Lydian mode — The Lydian mode is the major scale with a raised fourth, often described as the sharpest of the church modes. It is also the basis of George Russell’s Lydian Chromatic Concept and of the major 7 sharp 11 chord.

  • mixolydian mode — The mixolydian mode is the major-scale mode with a lowered seventh, often heard in folk-derived or modal melodies. Clues may connect it to Grieg, the Hardanger fiddle, or the tuning of the mbira.
• Scale systems
  • mode — Mode is a musical concept for organizing scales by interval pattern and melodic behavior, as in Gregorian chant and in the Persian dastgah and Arabic maqam systems. In statistics, a mode is also the most frequent value in a data set.

Special Scales

• Pentatonic scale — five-note scale; the major pentatonic omits scale degrees 4 and 7 (1-2-3-5-6); the minor pentatonic omits 2 and 6 (1-b3-4-5-b7). Ubiquitous in folk, blues, and rock. The pentatonic scale is widely used in folk music and East Asian traditions. Its major form can be played on the black keys of a piano, and it appears in works by Dvořák, Debussy, and in Kodály-based pedagogy.

• Blues scale — minor pentatonic with an added flat 5 (the “blue note”).

• Whole-tone scale — all whole steps; six pitches, no leading tone; associated with impressionism (Debussy). It is often used for a dreamy, symmetrical sonority; Debussy and Messiaen used it, and it can be heard as two augmented triads a whole step apart.

• Octatonic (diminished) scale — alternating whole and half steps; eight pitches; symmetrical, favored in 20th-century music.

• Microtonality — the use of intervals smaller than the semitone; examples include quarter tones (24-equal temperament), the 31-tone scale, and the natural microtonal inflections of non-Western traditions; composers include Wyschnegradsky, Hába, and Partch. It appears in some Māori chant traditions and in Arabic and Persian music, where partial sharps and flats may be used. Ben Johnston and Harry Partch wrote microtonal music, and Partch built special instruments such as the Chromelodion to realize unusual tunings.

Circle of Fifths

• Circle of fifths — a diagram arranging all 12 major (and parallel minor) keys by ascending perfect fifths clockwise: C (0 sharps/flats), G (1 sharp), D (2), A (3), E (4), B/Cb (5/7), F#/Gb (6), Db (5 flats), Ab (4), Eb (3), Bb (2), F (1 flat). It is often used to show key relationships, chord progressions, and the sharp-flat ordering of pitches.

• Keys adjacent on the circle are closely related and share six of seven scale tones.

Tuning and Temperament

• Just intonation — a tuning system in which intervals are tuned to pure whole-number frequency ratios (e.g., the perfect fifth as 3:2, the major third as 5:4); produces beatless consonances but requires retuning when changing keys, making it impractical for modulating tonal music. It is also called pure tuning or pure intonation. Its consonant intervals are based on exact whole-number frequency ratios such as 3:2 for the perfect fifth and 4:3 for the perfect fourth.

• Equal temperament — a tuning system that divides the octave into 12 equal semitones; each semitone is the ratio 2^(1/12) ≈ 1.0595, allowing music to be played in any key without retuning. It is the tuning system used by modern pianos and distributes the Pythagorean comma across the octave. Bach’s keyboard music is often associated with its adoption.

• commas and micro-intervals
  • commas — Commas are punctuation marks used to separate items in a list and to clarify sentence structure. In music theory, a comma can also name a very small interval or tuning discrepancy, as in the comma of Pythagorean tuning.
• tuning — Tuning is the adjustment of an instrument’s pitch, whether by equal temperament, just intonation, or other temperament systems. It is commonly done against a reference pitch such as the oboe’s concert A or the standard A440.
  • comma
    • Pythagorean comma — The Pythagorean comma is the small tuning difference between twelve pure fifths and seven octaves. It is the accumulated error that appears when a scale is built by stacking perfect fifths.
• tuning systems
  • Well temperament — Well temperament is a tuning system that compromises among keys so music remains acceptably in tune across the keyboard. It is associated with Andreas Werckmeister and is often discussed alongside Bach’s Well-Tempered Clavier.

Related Concepts and Applications

• Pitch organization
  • chromatic — Chromatic describes music that moves by semitones and uses pitches outside the current key, as in chromatic scales and chromaticism. Clues often mention Bach’s Chromatic Fantasia and Fugue, Gesualdo, and theoretical contrasts with diatonic writing.
• Scales and pitch collections
  • diatonic — Diatonic refers to the notes or pitches belonging to a standard scale, especially the major scale. It is contrasted with chromatic, which includes all semitones in the octave.
• keys

  • A major — A major is the bright, three-sharp key used for works such as Schubert’s Trout Quintet and Beethoven’s Seventh Symphony. It is also the home key of Mozart’s Clarinet Quintet and Clarinet Concerto, and it appears in Franck’s Violin Sonata and other Romantic repertoire.

  • A minor — A minor is the key with no sharps or flats, the relative minor of C major, and the key of Grieg’s Piano Concerto and Beethoven’s Für Elise. It is a common quizbowl answer for works in A minor by Schumann, Hummel, Mahler, and others.

  • D major — D major is the bright two-sharp key often nicknamed the trumpet key in Baroque music. Quizbowl clues include Pachelbel’s Canon, Handel’s Hallelujah Chorus and Zadok the Priest, Brahms’s violin concerto, and the key of many celebratory works such as Elgar’s Pomp and Circumstance March No. 1.

  • D-flat major — D-flat major is a lush, flat key often associated with lyrical piano writing. Quiz clues connect it to Debussy’s “Clair de lune,” Chopin’s Berceuse and Fantaisie-Impromptu, and the famous variation in Rachmaninoff’s Rhapsody on a Theme of Paganini.

  • F-sharp major — F-sharp major is the major key with six sharps and is enharmonic with G-flat major. It appears in Chopin’s Barcarolle and in Liszt’s Dante Sonata and Hungarian Rhapsody No. 2.

  • parallel minor — A parallel minor is the minor key that shares its tonic with a major key, such as C minor and C major. It is contrasted with the relative minor, which shares the same key signature instead.

  • C minor — A minor key signature with three flats, C minor is the relative minor of E-flat major. It is strongly associated with Beethoven, including the Fifth Symphony, the Pathétique Sonata, and the Coriolan Overture, and also appears in works by Mozart, Brahms, Prokofiev, Szymanowski, and Bach’s C-minor passacaglia.

  • D minor — D minor is a dramatic key with one flat and a long symphonic pedigree. Clues often mention Franck’s Symphony in D minor, Beethoven’s Ninth, Sibelius’s Violin Concerto, or Bruckner’s symphonies in that key.

  • E major — This is the key with four sharps, the relative major of C-sharp minor and a common home for bright, expansive orchestral writing. It is the key of works such as Grieg’s Morning Mood and Salut d’Amour, along with examples from Bach, Vivaldi, and Schubert.

  • E minor — E minor is the minor key with one sharp and the relative minor of G major. It frequently appears in Romantic concertos and symphonies, including Dvořák’s New World Symphony and Elgar’s Cello Concerto, and is associated with works by Mendelssohn, Brahms, Tchaikovsky, and Shostakovich, including Mendelssohn’s Violin Concerto.

  • G minor — G minor is a minor key often associated with Mozart’s Symphony Nos. 25 and 40, nicknamed the Little and Great symphonies. It also appears in violin works by Bruch and Prokofiev and in famous sonatas like Tartini’s Devil’s Trill.

  • minor keys
    • F-sharp minor — F-sharp minor is the minor key with three sharps and the relative minor of A major. Questions often tie it to Haydn’s Farewell Symphony, Beethoven’s Hammerklavier Sonata, and Rachmaninoff’s First Piano Concerto.
  • relative minor — A relative minor is a minor key that shares a key signature with a major key but has a different tonic. For example, F-sharp minor is the relative minor of A major.
• Keys and scales
  • G major — G major is a bright key with one sharp, often used in Classical and Baroque music, and it is the key of works like Haydn’s Symphony No. 94 and Mozart’s Eine Kleine Nachtmusik. Clues about it often mention the relative minor E minor, Bach’s Goldberg Variations, and other symphonic nicknames such as Surprise or Oxford.
• major keys

  • A-flat major — A-flat major is the four-flat major key associated with Chopin’s Heroic Polonaise and Farewell Waltz. It also appears in Beethoven’s Pathétique Sonata and other slow movements, making it a common clue in music questions about key signatures and Romantic piano works.

  • B major — B major is the key of the chord being identified in the musical clues.

  • C major — C major is the key with no sharps or flats, and it anchors works such as Mozart’s Jupiter Symphony, Beethoven’s Waldstein Sonata, Schubert’s Great Symphony, and Ravel’s Boléro. It is also a common reference point for pieces set against C minor or A minor.

  • F major — F major is the major key with one flat, the relative major of D minor. It appears in works by Bach, Vivaldi, Beethoven, Mascagni, Saint-Saëns, and Ravel.

• scales

  • major pentatonic scale — The major pentatonic scale is a five-note scale formed by removing the semitones from a major scale. It is common in improvisation and is associated with the black keys of the piano.

  • minor scale — The minor scale is a diatonic scale associated with a darker or sadder sound than the major scale. In its natural form it is also called the Aeolian mode, and it has half steps between the second and third degrees and between the fifth and sixth degrees. It also appears in harmonic and melodic forms, which alter the sixth and seventh scale degrees for tonal usage. A well-known anthem example opens with an ascending figure built from this type of scale.

  • minor scales — Minor scales are the darker-sounding family of musical scales, contrasted with major scales and including natural, harmonic, and melodic forms. The natural minor is equivalent to the Aeolian mode and can be built from the sixth degree of its relative major.
    • melodic minor scale — The melodic minor scale is the minor scale that raises the sixth and seventh degrees when ascending. In standard form it matches the natural minor when descending, unlike the harmonic minor scale.

  • natural minor scale — The natural minor scale is the basic minor scale form in tonal music theory. It is the Aeolian mode and uses the same notes as its relative major, beginning on the sixth degree of that major key. Compared with the major scale, it has a lowered third, sixth, and seventh scale degree, and it is often contrasted with major in discussions of cadences and accidentals.

  • octatonic scale — The octatonic scale alternates whole and half steps to create a symmetric eight-note pattern. It is especially associated with twentieth-century music and Stravinsky’s The Rite of Spring. Messiaen listed it among his modes of limited transposition.

  • Pentatonic — The pentatonic scale is a five-note scale widely used in many musical traditions, including Chinese music, gagaku, and some forms of Chinese opera. It can be hemitonic or anhemitonic, depending on whether semitones are present.
• minor keys

  • B minor — B minor is a key strongly associated with Bach, Liszt, Tchaikovsky, and other major works from the Baroque and Romantic eras. Its relative major is D major, and it appears in pieces such as Bach’s Mass in B minor and Liszt’s Piano Sonata in B minor.

  • F minor — F minor is the key of Beethoven’s Appassionata Sonata and several other stormy Romantic piano works. It also appears in a Chopin nocturne that closes with arpeggiated chords in the relative major, and in Schubert’s Fantasia for Piano Four Hands.

• Key relationships

  • B major and C major — In Also sprach Zarathustra, the ending juxtaposes B major and C major to dramatize the contrast between humanity and the universe.

  • parallel keys — Parallel keys are major and minor keys that share the same tonic but have different key signatures. In music theory, the parallel relationship is the one that turns G major into G minor and back again.

• solfège — Solfège is the seven-syllable note-naming system used to teach pitch and singing, assigning syllables such as do, re, and mi to scale degrees. It developed from Guido of Arezzo’s hymn-based ut-re-mi tradition and is used in both movable-do and fixed-do systems; later pedagogies such as Curwen and Kodály also used it.

  • do — Do is the first solfège syllable and is often represented by the pitch C in fixed-do systems. It also appears in musical notation traditions that trace back through Guido of Arezzo and later pedagogical methods such as Kodály.

  • mi — Mi is the solfège syllable for the note B in fixed-do systems and the third syllable after do and re. It appears in older tritone warnings such as “mi contra fa,” and in names like Petrus Alamire’s pseudonym.

  • Syllables

    • ti — Ti is the solfège syllable for the leading tone in the major scale. It was added after the older hexachord syllables ut, re, mi, fa, sol, and la were expanded to a seven-note system.
• Solfège and hexachords
  • mi and fa — Mi and fa are the adjacent solfège syllables that frame the semitone in the Guidonian hexachord. The old tritone warning “mi contra fa” refers to their unstable intervallic relation.
• Musical pitch names
  • G natural — G natural is the pitch one whole step above F and one half step below A in standard notation. It can also be the upper note of the tritone introduced by Steve Reich at the words “va im ee kaysh.”
• Notes and pitches
  • B — B is the note whose major key is discussed through references to German notation, Chopin, and several works by Strauss and Shostakovich. Its major key has five sharps and is the relative minor of D major.

• pitch — Pitch is the property of sound that corresponds to perceived highness or lowness and is tied physically to frequency. In music theory and synthesis, it is the attribute adjusted by pitch wheels and distinguished by perfect pitch.

• Pitch perception
  • Perfect pitch — Perfect pitch, or absolute pitch, is the ability to identify or reproduce musical notes without an external reference. It is discussed as more common among speakers of tonal languages and is sometimes linked to an auditory Stroop effect.

• Transposition — Transposition is the operation of shifting a melody to a different key while preserving its interval structure. In linear algebra, it also refers to swapping the rows and columns of a matrix.

• notes
  • D — The letter D names the voiced alveolar stop, the sound that appears in English contractions like had and would. D is also the musical note a whole step above C, the key of Pachelbel’s Canon and the tonic of several famous works.

Rhythm and Meter

• Beat — the basic unit of pulse in music. It can also refer to a striking motion in fencing. It appears in names such as Afrobeat and the Indestructible Beat of Soweto, and it underlies the offbeat in syncopation.

• Tempo — the speed of the beat, typically measured in BPM (beats per minute).

• Metronome — a device that produces a regular audible tick at a set BPM, used to keep steady tempo during practice; the mechanical pendulum version was patented by Maelzel in 1815. Johann Maelzel popularized the mechanical version, while Dietrich Nikolaus Winkel also developed an early form. Ligeti’s Poème Symphonique famously calls for 100 metronomes to start together and fall silent one by one. Metronomes also appear in Man Ray’s Object to Be Destroyed.

• Syncopation — accenting a beat or part of a beat that is normally unaccented; displacing the expected pulse. It is a hallmark of ragtime, where the melody is driven by off-beat emphasis and displaced accents.

• Hemiola — a rhythmic device in which two groups of three are replaced by three groups of two (or vice versa), temporarily contradicting the prevailing meter. It is common in Baroque cadences and later music, where it can create a brief cross-rhythm or syncopated effect.

• Polyrhythm — simultaneous use of two or more conflicting rhythmic patterns (e.g., 3 against 2). It is distinct from polymeter, because the pulses are layered within a shared metric framework.

• Polymeter — simultaneous use of two different time signatures.

• Downbeat — the first beat of a measure; the strongest beat.

• Upbeat (anacrusis) — a note or notes preceding the first full measure; begins before the downbeat.

• Fermata — a symbol (𝄐) indicating a note or rest is held beyond its notated value at the performer’s discretion. It is often called a bird’s eye and appears as a dot inside or beneath an inverted arc.

• Rubato — flexible tempo; the performer subtly speeds up and slows down for expressive effect. The term is Italian for “stolen,” and pianists such as Liszt used it freely to shape phrasing.

• Accelerando (accel.) — gradually getting faster. Ritardando (rit.) — gradually slowing down. Rallentando (rall.) — similar to ritardando.

• A tempo — return to the previous tempo after a deviation.

Tempo Markings (Italian, slowest to fastest)

• Largo — very slow and broad (~40–60 BPM). It appears in works such as Handel’s “Largo” from Xerxes and the slow movement of Dvořák’s New World Symphony.

• Grave — slow and solemn.

• Lento — slow (~45–60 BPM); slightly faster than Largo; emphasizes deliberate, unhurried movement.

• Adagio — slow and stately (~66–76 BPM). It means roughly “at ease,” lies between andante and largo, and titles works such as Barber’s Adagio for Strings and the famous G minor Adagio often attributed to Albinoni. It also names the slow middle movement of several Romantic-era works.

• Andante — walking pace (~76–108 BPM). It is an Italian musical tempo marking meaning “at a walking pace” and lies between adagio and allegro.

• Moderato — moderate speed (~108–120 BPM).

• Allegretto — moderately fast; lighter than allegro.

• Allegro — fast and lively (~120–168 BPM). Allegro is a tempo marking meaning brisk or lively, typically faster than moderato and slower than presto. It appears in Fritz Kreisler’s Praeludium and Allegro and in many other pieces marked for quick performance.

• Vivace — lively and fast.

• Presto — very fast (~168–200 BPM). Prestissimo is an even faster related marking.

• Prestissimo — as fast as possible.

• tempo markings

  • Larghissimo — Larghissimo is a tempo marking meaning extremely slow, slower than largo or adagio. It is used in classical music to indicate the broadest and most extended pacing.

  • rallentando — Rallentando is a gradual slowing of tempo in music. It is generally a less sharply marked slackening than ritardando.

  • ritardando — Ritardando is a musical direction meaning to slow down gradually. It indicates a broadening or slackening of tempo over a passage.

Related Concepts and Applications

• meter and beat
  • One beat — One beat is the duration counted for a note or group of notes in a given meter. In simple terms, a quarter note lasts one beat in 4/4 time, and an eighth note lasts one beat in 6/8 time.
• Rhythm — Rhythm is the musical pattern of beats and accents, a core element of jazz, reggae, calypso, and dancehall. Gershwin standards such as “I Got Rhythm” and “Fascinating Rhythm” and reggae terms like riddim point to the same clue word. It is also the title of Marina Abramović pieces, including a 1973 performance in which she repeatedly stabbed herself with knives.

  • Anacrusis — An anacrusis is a note or group of notes that comes before the first downbeat of a musical phrase. It is the pickup that leads into the opening accented beat.

  • metric modulation — Metric modulation is a rhythmic technique in which a new tempo is derived proportionally from the old one. It is named by analogy to harmonic modulation, and Elliott Carter is a major composer associated with it.

  • polyrhythms — Polyrhythms are the simultaneous use of contrasting rhythmic patterns, such as three against two or four against three. They are especially common in West African music and in passages built from hemiolas.

  • tuplets

    • triplet — A triplet is a group of three notes performed in the time normally given to two. The word also names a carbene ground state and a biradical intermediate in chemistry.

    • triplets — Triplets are sets of three siblings, as in the Luik runners, Donald Duck’s nephews, or the Powerpuff Girls being described as such a group. In music, a triplet divides two beats’ worth of time into three equal notes, creating a common rhythmic tuplet.

  • tālas — Tālas are the rhythmic cycles of Indian classical music, organized into traditional families and jātis that determine beat structure. In Carnatic practice, they can be counted with spoken syllables such as those used in konnakol.
• Performance practice
  • tempo rubato — Tempo rubato is the expressive alteration of tempo in performance, literally a “stolen time” effect. Pianists use it to speed up and slow down phrasing, especially in Chopin.

Reading Music

Read the relationships represented by notes, clefs, signatures, and rests.

Notation

The Staff

• Staff — the five horizontal lines and four spaces on which musical notation is written; pitches are assigned to lines and spaces. It is the basic framework used to notate pitch in written music.

• Treble clef (G clef) — the ornate symbol that curls around the second line, designating that line as G4; used for higher-pitched instruments and voices.

• Bass clef (F clef) — the symbol with two dots straddling the fourth line, designating it as F3; used for lower-pitched instruments and voices.

• Alto clef / tenor clef — C clefs that place middle C (C4) on the third or fourth line, respectively; used by viola, trombone, bassoon.

• Neumes — symbols used in medieval manuscripts to notate plainchant; the precursors to modern note shapes, indicating melodic contour and ornament without precise pitch. Forms such as the punctum and scandicus are examples.

• Ledger lines — short lines added above or below the staff to extend the range of notatable pitches.

• Grand staff — the treble and bass staves joined by a brace; used for keyboard music.

• notation symbols
  • clefs — Clefs are the symbols at the beginning of musical staves that indicate pitch, such as the treble and bass clefs. They developed from early C and F markers used in medieval chant notation.

    • Alto clef — The alto clef is the C clef commonly used for viola music. It places middle C on the staff and sits between the treble and bass clefs in pitch.

    • bass clef — The bass clef, also called the F clef, places F on the fourth line of the staff. It is used for lower-pitched instruments and voices, including the left hand of piano parts, tuba, and bassoon.

    • clef — A clef is the musical symbol placed at the beginning of a staff to show pitch. Common varieties include treble, bass, and alto clefs, with the alto clef notably used by the viola.

    • treble clef — The treble clef, also called the G clef, marks the G above middle C on the staff. It is the standard clef for higher-pitched voices and instruments and curls around the second line of the grand staff.

• notes
  • A natural — A natural is the note A without accidentals, the pitch orchestras commonly use as a tuning reference from the oboe. It is also the second scale degree in G major and is associated with standard concert pitch at 440 hertz in many ensembles.

Notes and Rests

• Whole note / whole rest — four beats in 4/4; rest hangs below a line.

• Half note / half rest — two beats; open notehead with stem; rest sits on top of a line.

• Quarter note / quarter rest — one beat; filled notehead with stem.

• Eighth note / eighth rest — half a beat; filled notehead with a flag (or beam when grouped).

• Sixteenth note — quarter of a beat; two flags or beams.

• Dot — placed after a notehead to add half its value (e.g., dotted quarter = 1.5 beats). A second dot adds half of the added value.

• Tie — a curved line connecting two noteheads of the same pitch, extending the duration without re-articulating.

• Slur — a curved line over different pitches indicating legato performance.

Time Signatures and Meter

• Time signature — a fraction-like symbol (e.g., 4/4) where the upper number gives beats per measure and the lower number identifies the note value receiving one beat. A time signature is the notation, usually written as two stacked numbers, that shows how beats are grouped in a measure and what note value gets the beat. Common examples like 4/4, 3/4, and 5/4 shape the feel of marches, waltzes, and other meters.

• Common time (C) — 4/4; four quarter-note beats per measure.

• Cut time (alla breve, ₵) — 2/2; two half-note beats per measure; music often feels faster at the same tempo.

• Simple meter — each beat divides into two (e.g., 2/4, 3/4, 4/4).

• Compound meter — each beat divides into three (e.g., 6/8, 9/8, 12/8); the beat note is a dotted value.

• Duple / triple / quadruple — two, three, or four primary beats per measure.

• Measure (bar) — a unit of time between two bar lines; contains the number of beats specified by the time signature.

• Barline / double barline / final barline — vertical lines separating measures; double = section boundary; final (thin-thick) = end of piece.

• meter

  • 3/4 — Three-four time is the meter with three beats per measure and a quarter-note beat, common in waltzes and minuets. It is the meter of many Strauss waltzes and other dance forms, and is often called waltz time.

  • 4/4 time — 4/4 time, also called common time, is the standard duple meter marked by the letter C. It is the most common meter in both classical and popular music and appears as a shorthand for mensural notation’s incomplete circle.

  • 5/4 — 5/4 is a quintuple meter, or mixed meter, with five beats per bar and often an uneven or limping pulse. It appears in Holst’s Mars, the second movement of Tchaikovsky’s Pathétique Symphony, the jazz standard Take Five, and the theme from Mission: Impossible.

  • triple meter — Triple meter is a musical meter with three beats to the bar, often written in forms like 3/4 or 3/8. It is associated with dances such as the sarabande and waltz, and older notation sometimes marks it with an empty circle.

• Meter and time signatures
  • cut time — Cut time is the 2/2 meter also called alla breve, indicated by a cut-through common-time symbol. It uses two half-note beats per measure and is often felt as a faster alternative to common time.
• time signatures
  • 5/4 time — It groups five quarter-note beats per measure and is sometimes described as a limping or asymmetrical waltz-like meter. It appears in pieces such as Dave Brubeck’s “Take Five,” Holst’s “Mars, the Bringer of War,” and the Bachianas Brasileiras No. 5 aria; other named composers associated with it here include Chopin, Tchaikovsky, Villa-Lobos, and Mussorgsky.

Key Signatures and Accidentals

• Sharp (#) — raises a pitch by one semitone.

• Flat (b) — lowers a pitch by one semitone.

• Natural (♮) — cancels a previous sharp or flat.

• Double sharp (x) / double flat (bb) — raises/lowers a pitch by two semitones.

• Key signature — sharps or flats placed at the beginning of each staff line indicating the home key; sharps are added in the order F-C-G-D-A-E-B; flats in reverse (B-E-A-D-G-C-F).

• Enharmonic equivalents — pitches that sound identical but are spelled differently (e.g., F# and Gb).
  • Enharmonic equivalence
    • Enharmonic Notes — Enharmonic notes are pitches that sound the same but are spelled differently, such as A-sharp and B-flat. They are essential for writing scales and chords correctly in tonal music notation.
  • Enharmonic relationships
    • enharmonic — Enharmonic notes are spelled differently but sound the same, as with A-flat minor and G-sharp minor or F-sharp and G-flat. The term also names an older genus of music theory associated with microtonal divisions and enharmonic modulation.
• accidentals — Accidentals are the pitch-altering symbols in musical notation, including sharps, flats, naturals, and more specialized microtonal variants. In older theory they were linked to musica ficta and to solmization rules for handling altered notes.

  • accidental — An accidental is a sign that raises or lowers a note from the pitch implied by the key signature. Common accidentals include sharps, flats, double sharps, double flats, and naturals.

  • flat — A flat accidental lowers a pitch by a semitone, as in the note B-flat or the flat third. In broader math and physics contexts, flatness also describes geometry with vanishing curvature or a coordinate basis where Christoffel symbols vanish at a point.

  • flats — Flats are accidentals that lower a note by a half step, and they appear in key signatures, enharmonic notation, and chords such as the Neapolitan. The clues point to the symbol used in music notation opposite the sharp.

  • sharps — Sharps are the musical accidentals that raise a note by a half step. Keys such as G major and D major are often used as simple examples because they contain one and two sharps, respectively.

• pitch classes and keys
  • F-sharp — F-sharp is the note enharmonic to G-flat and is famously associated with bright, piercing color symbolism in Scriabin’s music. It is also the key area for works like Chopin’s F-sharp minor Prelude and the opening of “The Final Countdown” in the minor mode.
• pitches

  • C sharp — C sharp is the musical pitch one semitone above C, enharmonically equivalent to D-flat. It is also the name of Microsoft’s programming language, created by Anders Hejlsberg and standardized by ECMA. The pitch also appears in questions about harp key signatures and symphonic recapitulations.

  • Middle C — Middle C is the note near the center of the piano keyboard, around 261.6 hertz. It sits on a ledger line between the treble and bass staves and serves as a key reference point in staff notation.

• Pitch classes

  • A-flat — A-flat is the musical pitch a semitone below A, enharmonic with G-sharp. In modern tuning, G-sharp above middle C is the pitch closest to 395 hertz, and it is equivalent to A-flat above middle C. A-flat is a common key center in romantic piano repertoire; Chopin’s Raindrop Prelude and Heroic Polonaise both use this pitch or its major key in prominent ways. It is also the missing pitch that completes a diminished seventh chord built on D, F, and B, with the spelling depending on musical context.

  • E-flat — E-flat is the pitch class often heard in concert works, transposing instruments, and key signatures. It is associated with the keys of Mozart’s Jeunehomme Concerto and Beethoven’s Eroica Symphony, and with the scordatura opening of Saint-Saëns’s Danse Macabre.

  • F — F is the note a half-step above E, the subdominant of C major, and the key of works such as Beethoven’s Sixth Symphony and the “Appassionata” Sonata’s minor-mode passages. Clues may also mention F major’s one flat, F minor’s four flats, or the horn and English horn being pitched in F.

  • G-flat — G-flat is the pitch a semitone above F and a common note name in key signatures. In enharmonic terms it is the same sounding note as F-sharp.

• Keys and key signatures
  • Major keys

    • B-flat — B-flat is the pitch a semitone below B natural, and it is enharmonically equivalent to A-sharp in equal temperament. It is the key of works such as Brahms’s Variations and Fugue on a Theme by Handel and Barber’s Adagio for Strings.

    • B-flat major — B-flat major is the key with two flats and the relative major of G minor. It is the key of works such as Beethoven’s Fourth Symphony, Mozart’s last piano concerto, and Bach’s final Brandenburg Concerto.

  • Minor keys

    • B-flat minor — B-flat minor is a dark, often dramatic key associated with works such as Chopin’s Piano Sonata No. 2 and Tchaikovsky’s Piano Concerto No. 1. It is also a frequent quizbowl clue for pieces with especially heavy, mournful, or stormy character.

    • C-sharp minor — This minor key is the one of Beethoven’s Moonlight Sonata and Rachmaninoff’s famous Prelude in C-sharp minor. Chopin’s Fantaisie-Impromptu and several other virtuosic piano works are also commonly associated with it.

    • G-sharp minor — G-sharp minor is a minor key enharmonic to A-flat minor. Quizbowl clues for it often mention Liszt’s La campanella, Chopin’s études, and Scriabin’s sonatas.

  • Relative — In music theory, a relative key is a major and minor key that share a key signature and have tonics a minor third apart. In grammar, a relative pronoun introduces a relative clause, as in words like who, which, and that.
• Musical keys
  • E-flat major — E-flat major is a key with three flats strongly associated with Beethoven’s heroic style and with works such as the Eroica Symphony and the Emperor Concerto. It also appears in major works by Mozart, Chopin, Mendelssohn, and Schumann.

Related Concepts and Applications

• Music notation
  • Notes
    • musical notes — Musical notes are the written symbols that indicate pitch and duration on a staff. They include forms descended from neumes and later developed into the familiar modern notation system.
  • sheet music — Written notation used to record music for performance and publication, whether as scores or manuscripts. It underlies modern notation, appears in collections such as IMSLP, and is the standard document musicians read from on a stand. Historical notation used neumes and symbols such as puncta and clives, while modern scores are often engraved with software like Sibelius, Finale, and LilyPond. Publishers and musicians use it to distribute and learn repertoire, from classical editions to Tin Pan Alley songs.
• Musical notation

  • mensural notation — Mensural notation is the late medieval and Renaissance system of rhythmic notation that preceded modern notation. It used shaped noteheads and signs such as the C and circle-with-dot symbols to show how note lengths should be interpreted in context.

  • tablature — Tablature is a notation system that shows fingerings, string positions, or key presses instead of standard staff notation. It is especially common for guitar and oud music, where the symbols indicate where to place the fingers rather than the pitch alone.

• Musical notation and note values
  • sixteenth notes — Sixteenth notes are the note values also called semiquavers in British usage. They are identified by a black note head with two flags, and Chopin’s “Revolutionary” Étude is a famous example built on them.
• Musical notation and symbols
  • stop — Stop is both a musical cue and a consonant type, appearing in clues about rhythm, telegraphy, and phonetics. It can also refer to the UK road-safety command and to the octagonal stop sign.
• Note values

  • Half note — A half note, also called a minim, is a musical note with a hollow head and a stem that lasts twice as long as a quarter note. In cut time it receives one beat.

  • Quarter note — A quarter note is the musical note whose filled-in notehead, stem, and lack of flag give it a duration of one beat in common time. It is called a crotchet in British usage and is longer than an eighth note but shorter than a half note.

  • whole note — A whole note, also called a semibreve in British notation, lasts four beats in common time. It is shown with a hollow notehead and no stem, and its corresponding rest is the rectangular symbol hanging from a staff line.

• Rests
  • Whole rest — A whole rest is the musical notation symbol for a full measure of silence, drawn as a rectangle hanging below the staff line. It is distinct from other rest values by its placement beneath the staff.

Intervals

• Interval — the distance in pitch between two notes; described by a number (1–8+) and a quality.
  • intervals — Intervals are the distances between two notes in music theory. They are named by ordinal number and include unisons and octaves, as well as more dissonant forms like the tritone and minor second.

    • augmented fifth — An augmented fifth is a musical interval spanning eight semitones. It is enharmonically equivalent to a minor sixth.

    • augmented second — The augmented second is a three-half-step interval, enharmonically similar to a minor third. It is common in harmonic minor scales and is often associated with Middle Eastern or exoticized musical effects.

    • fourth — A fourth is the interval from C up to F, and its perfect form is one of the basic consonant intervals in Western music. It appears in quartal harmony, plagal motion, and the spacing of adjacent strings in standard double bass tuning. In scale theory, the fourth is also the subdominant scale degree.

    • major seventh — A major seventh is the interval that makes a major seventh chord when added above a major triad. It is a strongly dissonant interval, often represented by a capital delta in chord symbols.

    • major sixth — The major sixth is a consonant musical interval spanning nine semitones, from C up to the A above it. In harmony, it is also the interval behind the so-called Neapolitan sixth chord and is linked in some traditions to the Landini cadence.

    • minor seventh — A minor seventh is a musical interval spanning ten semitones, such as from C up to B-flat. It is smaller than a major seventh but larger than a perfect sixth.

    • minor sixth — A minor sixth is a musical interval spanning eight semitones, such as from C to A-flat. It is broader than a perfect fifth and narrower than a major sixth.

    • minor third — A minor third is a musical interval of three semitones, such as from C down to A or from E-flat to G-flat. It is one of the basic consonant thirds in tonal music.

    • Octaves — Octaves are the interval of a perfect eighth, so named because notes separated by one octave sound closely related. The term also appears in J. A. R. Newlands’s ridiculed attempt to arrange the elements into repeating groups by atomic weight, called the Law of Octaves.

    • perfect fifth — A perfect fifth is the consonant musical interval spanning seven semitones. It is the second partial in the overtone series, making it foundational to organum and tonal harmony, and it is used in tuning strings and in the circle of fifths. It appears in counterpoint rules against parallel fifths and in the harmonic language associated with Copland, Bartók, and rhythm changes. Haydn’s Op. 76 No. 2, nicknamed the “Fifths,” is also associated with this interval.

    • perfect fifth — A perfect fifth is the musical interval spanning seven semitones, a 3:2 ratio, and the distance from tonic to dominant. It is central to the circle of fifths and appears prominently in counterpoint, organum, and many orchestral openings.

    • perfect fifth
      • fifth — A fifth is the perfect interval between adjacent violin strings in standard tuning, and it is the interval used in the circle of fifths. The same interval underlies related music-theory ideas in steelpan tuning and Lydian harmony.
    • perfect fourth — A perfect fourth is the musical interval spanning four diatonic scale steps, with a just-intonation ratio of 4:3. It is central in early music theory, organum, suspended chords, and many familiar harmonic progressions.
      • 4/3 — The ratio 4:3 gives the perfect fourth in music theory, and it is also the bond order of carbonate and nitrate in chemistry. A related computation clue points to the surface area of a tetrahedron with edge length 2, which is 4√3.

    • perfect fourths — Perfect fourths are musical intervals spanning five semitones, as from C to F. They are common in instrument tuning and harmony, and the augmented fourth is the tritone.

    • semitone — A semitone is the smallest common interval in Western tonal music, the distance between adjacent notes such as F and F-sharp. It appears in chromatic writing, tone clusters, and the construction of scales and tuning systems.

    • sixth — The sixth is a musical scale degree and an interval that appears in many chamber works and in augmented-chord nomenclature. The clues also point to a number of ensemble pieces, including Schoenberg’s Transfigured Night and works by Brahms, Tchaikovsky, and others.

    • third — The third is the scale degree and interval of a triad, spanning either a major or minor third. It appears in harmony, extended chords, Picardy thirds, and the Coltrane changes of “Giant Steps.”

    • thirds
      • major third — A major third is the musical interval spanning four semitones, such as the interval from G to B. When inverted, it becomes a minor sixth, and stacking two major thirds forms an augmented triad.
    • Tritone — A tritone is the dissonant musical interval spanning six semitones, exactly half an octave. It is also called an augmented fourth or diminished fifth; the augmented fourth spans three whole steps, as between C and F-sharp. Medieval theorists called it diabolus in musica. It appears in dominant seventh chords, Locrian mode, and tritone substitutions in jazz, and is prominent in Scriabin’s harmonic language.

• Unison — two notes of the same pitch; perfect unison = 0 semitones. Unison is also used for a musical performance style in which parts sound the same pitch, or in octaves, as a single line. The term literally means “one sound” in Latin.

• Minor 2nd — 1 semitone (half step); dissonant.

• Major 2nd — 2 semitones (whole step).

• Minor 3rd — 3 semitones; defines minor chords.

• Major 3rd — 4 semitones; defines major chords.

• Perfect 4th — 5 semitones.

• Tritone (augmented 4th / diminished 5th) — 6 semitones; divides the octave exactly in half; historically called diabolus in musica; maximally dissonant in common-practice harmony.

• Perfect 5th — 7 semitones; highly consonant, foundational to tonal music.

• Minor 6th — 8 semitones.

• Major 6th — 9 semitones.

• Minor 7th — 10 semitones.

• Major 7th — 11 semitones; strongly dissonant, resolves to the octave.

• Perfect octave — 12 semitones.

• Interval qualities — perfect (unisons, 4ths, 5ths, octaves), major/minor (2nds, 3rds, 6ths, 7ths), augmented (one semitone larger than perfect or major), diminished (one semitone smaller than perfect or minor).

• Compound interval — an interval larger than an octave (e.g., a 9th = an octave + a 2nd).

• Inversion of interval — flipping which note is on top; a major 3rd inverts to a minor 6th; numbers sum to 9; perfect stays perfect, major becomes minor, augmented becomes diminished.

• Consonance — intervals perceived as stable: perfect unison, 3rds, 5ths, 6ths, octave.

• Dissonance — intervals perceived as unstable and requiring resolution: 2nds, 7ths, tritone. It is the opposite of consonance and is often illustrated by harsh intervals such as the minor second and tritone.

• Counterpoint and harmony
  • thirds and sixths — Thirds and sixths are the two imperfect consonances emphasized in early counterpoint and fauxbourdon. They appear in passages associated with the Worcester Fragments, Martin le Franc, and later descriptions by Zarlino and Scarlatti.

Harmony and Musical Texture

Build from chords and harmonic functions to musical texture.

Harmony

• harmony — Harmony is the simultaneous sounding of multiple notes, the vertical counterpart to melody’s horizontal line. Writers such as Jean-Philippe Rameau, Walter Piston, and Edward Aldwell and Carl Schachter are closely associated with the study of harmony.
  • chords — A chord is a group of two or more notes sounded simultaneously, and triads and seventh chords are common examples. In music theory, chords are analyzed through progressions, inversions, voicings, and neo-Riemannian transformations.

    • arpeggios — An arpeggio is a broken chord played one note at a time, rather than simultaneously, often marked in notation by a vertical squiggle. The term is Italian for playing in the manner of a harp. Arpeggios recur in piano studies and works by composers such as Bach, Chopin, Tchaikovsky, Paganini, and Pärt, where the pattern can drive the texture or melody.

    • augmented chord — An augmented chord is a triad built from two stacked major thirds, giving it a sharply unstable sound. It is also called an augmented triad and is often discussed alongside the augmented fifth.

    • Chromatic predominants
      • augmented sixth chords — Augmented sixth chords are chromatic predominants in tonal music whose outer notes expand outward to an octave when they resolve. They come in Italian, French, and German varieties, and the Tristan chord is often analyzed as one of them.
        • augmented sixth — The augmented sixth is a chromatic interval family whose common forms are the Italian, French, and German sixths. These chords typically resolve outward by half step toward the dominant.

    • Diminished seventh chord — A diminished seventh chord is a symmetrical chord built by stacking three minor thirds. It is distinct from a half-diminished seventh chord. One common example is C, E-flat, F-sharp, and A. Because of its symmetry, it has four equivalent inversions across different keys.

    • inversions
      • E minor, second inversion — E minor, second inversion is a triad built from E, G, and B with the fifth in the bass. Its notes from low to high are B, E, G.

    • Neapolitan chord — A Neapolitan chord is a major triad built on the flattened or lowered second scale degree, usually used in first inversion as a chromatic pre-dominant sonority. It is especially common in minor keys and typically resolves toward the dominant; it is often associated with classical harmony and described as suggesting the Phrygian mode.

    • Petrushka chord — The Petrushka chord is a famous Stravinsky sonority made from two major triads separated by a tritone. It takes its name from the ballet Petrushka, where the title puppet is brought to life by the Charlatan.

    • seventh chords

      • diminished seventh — A diminished seventh chord is a symmetrical seventh chord built from stacked minor thirds. It commonly appears in theory questions as the minor-third-inverted form of a dominant seventh and as the chord made of C, E-flat, G-flat, and B-double-flat on C.

      • dominant seventh chord — A dominant seventh chord is a major triad with a minor seventh added above the root, the familiar V7 sonority in tonal music. The clues connect it both to Monteverdi’s early harmonic language and to Partch’s discussion of otonality in just intonation.

  • mystic chords
    • mystic chord — The mystic chord is Alexander Scriabin’s six-note sonority, also called the Prometheus chord. Scriabin referred to it as the chord of the pleroma, and it pervades works such as The Poem of Ecstasy.
  • Tone clusters — Tone clusters are dense chords made from adjacent notes, often produced by pressing many neighboring keys at once. They became associated with Henry Cowell, Charles Ives, and later composers such as Ligeti and Penderecki.

Chords and Triads

• Triad — a three-note chord built in thirds: root, third, fifth. It is the basic harmonic unit of tonal music and may be major, minor, augmented, or diminished.

• Major triad — major 3rd + minor 3rd above root (e.g., C-E-G); stable, bright.

• Minor triad — minor 3rd + major 3rd above root (e.g., C-Eb-G); stable, darker.

• Diminished triad — minor 3rd + minor 3rd above root (e.g., C-Eb-Gb); dissonant, unstable.

• Augmented triad — major 3rd + major 3rd above root (e.g., C-E-G#); ambiguous, unstable.

• Root position — the root is the lowest note.

• First inversion — the third is the lowest note; notated 6 in figured bass.

• Second inversion — the fifth is the lowest note; notated 6/4 in figured bass.

• Arpeggio — the notes of a chord played in succession rather than simultaneously; can ascend or descend; notated with a wavy vertical line beside the chord. It is a standard technique on piano and violin and is commonly used in exercises and caprices, including Paganini’s famous opening caprice.

• intervals and chord structures
  • Augmented — An augmented triad is built from two stacked major thirds, and an augmented interval is widened by a semitone. In music theory, the term also appears in augmented sixth chords and in rhythmic augmentation, where note values are lengthened.
• diminished harmony
  • Diminished — A diminished triad is built from two minor thirds, and a diminished seventh chord stacks three minor thirds. The term also names the related symmetric scale and the interval that is one half-step smaller than a minor interval of the same name.

Seventh Chords

• Seventh chords

  • Dominant seventh — A dominant seventh chord is built on the fifth scale degree and contains a root, major third, perfect fifth, and minor seventh. In notation, it can be spelled with notes such as G, B, D, and F.

  • dominant seventh chords

    • F dominant seventh chord — An F dominant seventh chord consists of the notes F, A, C, and E-flat. It is also called an F major-minor seventh chord.

• Seventh chord — a triad with an added seventh above the root.

• Major seventh (Maj7) — major triad + major 7th (e.g., Cmaj7 = C-E-G-B); warm, jazzy.

• Dominant seventh (V7) — major triad + minor 7th (e.g., G7 = G-B-D-F); the most harmonically active chord, strongly pulls to the tonic.

• Minor seventh (m7) — minor triad + minor 7th (e.g., Cm7 = C-Eb-G-Bb).

• Half-diminished seventh (ø7) — diminished triad + minor 7th (e.g., Bø7 = B-D-F-A); used as the leading-tone chord in minor.

• Fully diminished seventh (°7) — diminished triad + diminished 7th (e.g., B°7 = B-D-F-Ab); symmetrical, used for drama and modulation.

• Third inversion — the seventh is the lowest note; notated 4/2 in figured bass.

Functional Harmony and Roman Numeral Analysis

• Roman numeral analysis — chords labeled by scale degree; uppercase = major (I, IV, V); lowercase = minor (ii, iii, vi); diminished with ° (vii°).

• Tonic (I) — the home chord; stable, restful.

• Dominant (V) — built on scale degree 5; creates the strongest harmonic tension; its tritone (leading tone and 4th) resolves to the tonic.

• Subdominant (IV) — built on scale degree 4; pre-dominant function; moves toward V or I.

• I-IV-V progression — the backbone of Western tonal harmony; underlies countless folk, pop, and blues pieces.

• Secondary dominant — a dominant seventh chord applied to a chord other than the tonic, temporarily tonicizing it; written V/x (e.g., V/V = a D7 chord in C major).

• Modulation — a change of tonal center (key); common types: pivot chord (a chord functioning in both keys), direct, and chromatic.

• Tonicization — brief application of dominant motion to a non-tonic chord without a full modulation.

• Picardy third — ending a minor-key piece or section with a major tonic chord; the raised third is the distinctive feature. It is a common Baroque cadence and appears in works by composers such as Bach and Dvořák.

• Neapolitan sixth chord (N6 / bII6) — a major triad built on the lowered second scale degree, typically appearing in first inversion; functions as a pre-dominant chord leading to V; common in minor keys (e.g., in C minor: Db-F-Ab in first inversion).

• Italian augmented sixth chord (It+6) — an augmented sixth chord containing scale degrees b6, 1, and #4; the interval of an augmented sixth between b6 and #4 resolves outward by half step to the octave on the dominant.

• French augmented sixth chord (Fr+6) — an augmented sixth chord containing scale degrees b6, 1, 2, and #4; distinguished from the Italian by the added second scale degree; has a whole-tone character.

• German augmented sixth chord (Ger+6) — an augmented sixth chord containing scale degrees b6, 1, b3, and #4; enharmonically equivalent to a dominant seventh chord; approaches the dominant via a 6/4 chord to avoid parallel fifths.

• Modal mixture (borrowed chords) — the use of chords from the parallel minor in a major-key context (or vice versa); e.g., borrowing iv or bVII into a major-key progression; darkens the harmony without a full modulation.

• Figured bass — a Baroque notation system in which numerals below a bass line indicate the intervals (and thus chords) to be realized above it; the foundation of basso continuo practice. It is also called thorough bass or thoroughbass, and the performer realizes the chords above the written bass, often for keyboard accompaniments.

• Basso continuo — the Baroque practice of a bass line performed by a melody instrument (cello, bassoon) and a chording instrument (harpsichord, organ, lute) that realizes the figured bass; the rhythmic and harmonic spine of most Baroque ensemble music.

Cadences

• cadences — Cadences are musical endings that give a phrase or section a sense of closure. Common types include the perfect, plagal, and deceptive cadence, while a Corelli cadence refers to a dissonant clash associated with Arcangelo Corelli.

  • Deceptive cadence — A deceptive cadence replaces the expected tonic with another chord, often the submediant, to delay the sense of resolution. It leaves the listener expecting the final perfect cadence before the real close arrives.

  • perfect authentic cadence — A perfect authentic cadence moves from a root-position dominant chord to a root-position tonic chord. The tonic note appears in the soprano voice, making it the strongest close in tonal classical music.

  • Perfect cadence — A perfect, or authentic, cadence is the standard tonal close that resolves the dominant V chord to the tonic I chord. It is commonly treated as the strongest and most conclusive cadence in basic tonal music. In minor keys, it typically uses the major form of the dominant.

  • cadence — This musical term names the chordal patterns that end phrases, especially the authentic cadence from dominant to tonic. Its variants include plagal, deceptive, and cadenza-related usage in common-practice music.

    • plagal cadence — A plagal cadence moves from the IV chord to the I chord and is often called the “Amen” cadence because of its use in hymns and church music.
      • plagal — A plagal cadence moves from the subdominant to the tonic, and it is often called the Amen cadence. The term also describes the even-numbered church modes paired with hypo- prefixes.

• Authentic cadence (V-I) — the strongest resolution; perfect authentic cadence (PAC) requires both chords in root position with the tonic on top in the melody.

• Imperfect authentic cadence (IAC) — V-I but without all PAC conditions (e.g., inverted chord or non-tonic melody note).

• Half cadence — ends on V; feels like a question mark; common mid-phrase. In tonal theory it is a weak punctuation point, sometimes used to prepare a medial caesura.

• Plagal cadence (IV-I) — “Amen” cadence; softer resolution than authentic.

• Deceptive cadence (V-vi) — expected I is replaced by vi; creates surprise and continuation.

• Phrygian cadence — a half cadence in minor in which iv6 moves to V; named for its resemblance to the Phrygian mode’s descending half step; common in Baroque music as a way to end a slow movement before a following fast one.

Chord Extensions and Other Concepts

• Ninth, eleventh, thirteenth chords — extensions beyond the seventh; stacked thirds; common in jazz.

• Suspension — a non-chord tone held from the previous chord, creating dissonance that resolves stepwise downward (4-3 and 9-8 suspensions are most common).

• Pedal point — a sustained or repeated pitch (often the tonic or dominant) in one voice while harmonies change above or below it.
  • Pedal points
    • drone — A sustained low musical tone or pedal effect used as an accompaniment, holding one or more pitches continuously beneath a piece. It is common in bagpipes and other folk or modal textures, and appears in instruments such as didgeridoos and in Indian tanpura accompaniment. Minimalist composers including La Monte Young, Phill Niblock, and Charlemagne Palestine explored drones as a structural texture; the term can also mean a continuous bass note held under a work.

• Ostinato — a persistently repeated melodic, rhythmic, or harmonic pattern. An ostinato is a short musical pattern repeated persistently with little or no variation. It can be rhythmic, melodic, or harmonic, and common examples include ground bass lines and repeating accompaniment figures in both classical and popular music.

• Voice leading — the smooth, logical movement of individual parts; common-practice rules include resolving the leading tone upward and avoiding parallel perfect 5ths and octaves.

• Parallel fifths / parallel octaves — consecutive perfect fifths or octaves between the same two voices, moving in the same direction; forbidden in common-practice counterpoint because they destroy voice independence.

• accompaniment
  • obbligato — Obbligato is a musical term for an indispensable or non-omissible part, often an instrumental line that is required in a performance. In later usage, it can describe a subordinate but essential accompanying line, especially in vocal music.
• Non-chord tones
  • suspensions — Suspensions are non-chord tones in which a note is held from one harmony into the next, creating a dissonance that resolves downward by step. They appear in counterpoint as 4-3, 7-6, or 9-8 types and are sometimes notated in figured bass with a line between numbers.
• Accompaniment patterns

  • Alberti bass — An Alberti bass is a broken-chord accompaniment pattern that repeats low, high, middle, high in even note values. It is especially associated with Classical keyboard music and Mozart sonatas.

  • vamp — A vamp is a short repeated musical figure, especially in jazz or musical theatre, where it can support a soloist or be repeated ad libitum. The term can also refer to a common turnaround pattern built on a looping harmonic cycle.

• Bass accompaniment patterns
  • walking bass — A walking bass is a jazz accompaniment style in which the bass plays a steady series of notes, often in quarter notes, that outlines the harmony. It is common in blues and also appears in Baroque music and on instruments such as bass, piano, and guitar.

Related Concepts and Applications

• Harmony and chord theory
  • Music theory treatises
    • Treatise on Harmony — Jean-Philippe Rameau’s Treatise on Harmony is a landmark 1722 work of music theory on intervals, chords, modes, composition, and accompaniment. The book tries to formalize Rameau’s empirical theory through a deductive system based on a single clear principle.
• Modes and chord qualities
  • Major — Major can refer to the musical mode or chord quality, and also to the military rank marked by the copper leaf. Clues may also point to Major Major Major Major from Catch-22, whose absurd name repeats the word several times.
• Tonal harmony
  • false relation — A false relation is a clash in tonal music where the same pitch class appears simultaneously with different accidentals in different voices. It is especially associated with English cadences in Renaissance and early Baroque music.
• tonality — Tonality is the system of organizing music around a home key or tonic, as opposed to atonality. It underlies common-practice harmony and is analyzed in theories ranging from Schenkerian space to Liszt’s later “bagatelle without” it.

Texture

• Timbre — the characteristic tone color or quality of a sound that distinguishes one instrument or voice from another at the same pitch and dynamic; determined by the blend of overtones (harmonics) present in the sound. It is often described as bright or dark and depends on the relative strength of overtones. Harmonic content and related features such as attack and vibrato also affect it.

• Monophony — a single melodic line with no accompaniment (e.g., Gregorian chant). Gregorian chant and Hildegard of Bingen’s plainsongs are classic examples, and the same line may be doubled by many voices without becoming polyphonic.

• Homophony — a melody supported by chordal accompaniment; all voices move in the same rhythm (homorhythmic/chordal texture) or melody with accompaniment pattern. It contrasts with polyphony and is common in much later Western music, even when Renaissance composers occasionally use it.

• Polyphony — two or more simultaneous, independent melodic lines of equal importance. It is closely associated with counterpoint, developed from organum, and was especially important in Renaissance choral music, including masses, large multi-voice motets, and later madrigals such as Monteverdi’s.
  • organum — Organum is the early medieval polyphonic form that adds a second voice to Gregorian chant. It is associated with the Notre-Dame school, especially Léonin and Pérotin, and it helped lead toward the motet.
• Counterpoint — the technique of combining independent melodic voices according to rules of voice leading; the adjective is contrapuntal. Counterpoint is central to fugues, canons, and other polyphonic writing, and theorists such as Johann Fux helped codify its species and motion types.

  • Species counterpoint — a pedagogical system (Fux, Gradus ad Parnassum) progressing from note-against-note (1st species) to florid counterpoint (5th species). It is written against a cantus firmus in successive stages of increasing complexity, and is also discussed in later treatises on Renaissance polyphony.

  • Contrary motion — two voices moving in opposite directions; the strongest type of independent voice motion.

  • Oblique motion — one voice stays on a pitch while the other moves. It is a basic texture distinction in counterpoint and appears in examples such as a sustained vocal line over changing harmony.

  • Parallel motion — two voices moving in the same direction by the same interval; parallel perfect 5ths and octaves are avoided in common practice.

  • Similar motion — two voices moving in the same direction by different intervals.

  • cantus firmus — A cantus firmus is a pre-existing melody used as the foundation for polyphonic composition, especially in medieval motets and Renaissance masses. Famous examples include L’homme armé and other fixed tunes that were repeatedly set in Latin sacred music.

• Heterophony — simultaneous variations of the same melody in different voices.

• Medieval musical textures
  • hocket — A hocket is a medieval musical texture in which a melody is split between voices so that one sounds while another rests. Its name suggests a hiccup-like effect and appears in works by Machaut, Josquin, and other early composers.
• ensemble sections
  • rhythm section — In jazz big bands, the rhythm section is the core backing unit, usually made up of piano, bass, and drums, sometimes with guitar. It supplies harmony and timekeeping, and in early New Orleans ensembles it could include banjo and tuba.
• Vocal textures
  • antiphony — Antiphony is call-and-response singing, originally a responsorial form of medieval song. It also describes polychoral textures in which separate choirs or voices answer one another, especially in sacred music.
• Voices — Voices is a broad term for sung or spoken parts in music, especially the individual lines in four-part harmony. It can also refer more generally to the human voice as used in performances such as yodeling or throat singing.

Form, Genre, and Composition

Recognize recurring structures before identifying larger forms and genres.

Musical Form

• Musical form

  • Da capo — Da capo is the musical instruction meaning to return to the beginning, usually after a contrasting middle section. It also gives its name to the da capo aria, a Baroque form in which the opening material is repeated with ornamentation.

  • French overture — A French overture begins with a slow dotted-rhythm section and moves into a faster fugue-like section. The form is strongly associated with Lully and appears in Baroque works such as Bach’s Clavier-Übung II and the opening sinfonia of Handel’s Messiah.

  • ritornello — A ritornello is a recurring instrumental refrain found especially in Baroque concertos and operas. The term is closely associated with Vivaldi and with later concerto practice, where the full orchestra returns after solo passages.

  • scherzos — Scherzos are lively musical movements or standalone pieces, often in a fast triple meter. The name means “joke” in Italian. In Romantic and later repertoire they frequently replace the minuet, and they often appear as movements in larger works; Chopin is especially associated with virtuosic scherzi, and Beethoven also wrote notable examples.

• Phrase and Section Design

  • Motive (motif) — the smallest recognizable melodic or rhythmic idea in a composition; a brief, distinctive cell that can be developed, varied, or combined to build larger structures.

  • Leitmotif — a recurring musical theme associated with a specific character, object, place, or idea; closely associated with Wagner’s operas, where leitmotifs are woven through the orchestral texture to guide dramatic meaning.

  • Binary form (AB) — two contrasting sections, each usually repeated; common in Baroque dances.

  • Ternary form (ABA) — three sections where the first returns after a contrasting middle section; da capo arias.

  • Strophic form — the same music repeats for each verse of a text; common in songs and hymns.

  • Through-composed — new music for each section; no large-scale repetition.

  • Rondo form — a recurring refrain (A) alternates with contrasting episodes: ABACA or ABACABA; common in final movements.
    • forms
      • rondo — A rondo is a musical form built around a recurring main theme that alternates with contrasting episodes, often schematized as A-B-A-C-A. Mozart used it in the “Turkish March,” and the form appears widely in classical finales and character pieces.

  • Theme and variations — a theme is stated and then repeated in altered forms (varied harmonically, melodically, rhythmically, etc.); Beethoven’s Op. 111, Mozart’s “Ah, vous dirai-je maman.” Examples include Bach’s Goldberg Variations, Beethoven’s Diabelli Variations, Elgar’s Enigma Variations, and Brahms’s Variations on a Theme by Haydn.

  • Sonata form (sonata-allegro form) — the primary form of the Classical period’s first movements:

    • Exposition — introduces the primary theme (tonic key) and secondary theme (dominant or relative major key), often ending with a cadence theme; may be repeated. In sonata form, the exposition is the opening section that presents the main themes, often in two subject groups. The first movement of Beethoven’s Eroica expands this section by repeating it.

    • Development — themes are fragmented, transposed, and developed through various keys; harmonically unstable.

    • Recapitulation — return of both themes, now both in the tonic key. In sonata form it follows the development, usually after a retransition, and precedes the coda.

    • Coda — an optional closing section extending the ending. It is a concluding passage appended to a musical form, often following the recapitulation in sonata form; the term is Italian for “tail,” and scores may mark it with the coda symbol to jump to the ending section.

    • Slow introduction — an optional introductory section before the exposition.

  • Minuet and trio — a stately triple-meter dance form (ABA); the trio is a contrasting middle section; common third movement in Classical symphonies.

  • Scherzo — a fast, often humorous triple-meter movement that replaced the minuet in Romantic symphonies (Beethoven); also ABA form with a trio. The term comes from the Italian word for joke, and the form can also appear in instrumental works such as Prokofiev’s Second Piano Concerto.
• Imitation, Repeated Bass, and Recurring Material
  • Fugue — a polyphonic compositional technique; a subject (theme) is introduced in one voice, then imitated in successive voices at the fifth or fourth; includes countersubject, episodes, and stretto. Associated with J.S. Bach. It is especially associated with Bach, who paired fugues with preludes in The Well-Tempered Clavier and explored the form in The Art of Fugue.

    • Subject — the main melodic idea of a fugue.

    • Answer — the subject transposed to the dominant key (real answer) or with slight adjustment (tonal answer).

    • Exposition — the opening section where each voice enters with the subject. Also used more generally for an opening section in a work, and in fugues it is the section where each voice enters with the subject.

    • Countersubject — a melodic line that consistently accompanies the subject/answer in a fugue, heard simultaneously with subsequent voice entries.

    • Episode — a passage in a fugue between subject entries; typically develops motives from the subject or countersubject and moves through related keys.

    • Stretto — overlapping entries of the subject before the previous one finishes. It is often used near the end of a fugue to heighten intensity.

  • Canon — strict imitation where one voice exactly copies another at a fixed time interval; a round is a type of canon (e.g., “Row, Row, Row Your Boat”). Examples include crab canons and retrograde canons, Pachelbel’s Canon in D, the canons in Bach’s Musical Offering and Goldberg Variations, Ockeghem’s Missa prolationum, and Beethoven’s Fidelio.
    • Crab canon — A crab canon is a retrograde canon in which one voice is answered by the same melody played backward. Bach included a famous example in The Musical Offering, making the form a favorite for palindromic contrapuntal writing.
  • Ritornello form — a Baroque form in which a recurring orchestral refrain (ritornello) alternates with freer solo sections; the ritornello may return in varied keys and truncated forms; used extensively by Vivaldi and Handel in concertos.
    • ritornellos — Ritornellos are recurring tutti refrains in Baroque music, especially in operas and concertos. They later helped inspire the rondo form.
  • Ground bass (basso ostinato) — a short bass line repeated continuously while upper voices vary freely above it; foundational to the passacaglia and chaconne.
    • Lament bass
      • chromatic fourth — A chromatic fourth, also called passus duriusculus, is a descending semitonal line spanning a fourth and often used as a lament figure. It is especially associated with the bass pattern in Purcell’s “Dido’s Lament” and other plaintive Baroque passages.

  • Passacaglia — a set of continuous variations over a repeating bass line (or harmonic progression) in triple meter; Bach’s Passacaglia in C minor is the canonical example. It is a Baroque form and is closely related to the chaconne.

  • Chaconne — closely related to the passacaglia; continuous variations over a repeating harmonic progression, often in triple meter; Bach’s Chaconne from Partita No. 2 in D minor and Purcell’s “When I am laid in earth” are standard examples. Handel’s set of variations in G major is another famous example.
• Large-Scale Genres and Performing Forces
  • Concerto — a multi-movement work for soloist(s) and orchestra; the double exposition (in Classical concertos) presents themes first in the orchestra, then the soloist. The cadenza is an unaccompanied solo passage near the end of a movement. It is a genre of classical music in which a solo instrument is accompanied by an orchestra and often showcases virtuoso display. Common examples include piano, violin, clarinet, and horn concertos; Mozart and Beethoven are major composers of the form. The related Baroque concerto grosso features a small group of soloists and ensemble, and composers such as Bach, Vivaldi, Corelli, and Handel wrote examples.
    • Cadenza — a virtuosic, often improvisatory solo passage, typically near the end of a concerto movement; in Classical concertos the orchestra pauses on a tonic 6/4 chord while the soloist displays technical brilliance before resolving to V and the final orchestral ritornello. Classical examples include cadenzas for Mozart concertos and later written-out versions by composers such as Clara Schumann and Joseph Joachim.

  • Symphony — a multi-movement orchestral work; the Classical four-movement plan is: fast (sonata form) – slow – minuet/scherzo – fast finale. The genre is especially associated with Haydn, Mozart, Beethoven, Brahms, Mahler, Berlioz, Dvořák, Sibelius, and Shostakovich. Schubert left an unfinished symphony, Brahms’s first symphony was nicknamed Beethoven’s Tenth, and the “curse of the ninth” is a superstition linked to major composers after nine symphonies. The term also appears in film and popular culture, including Disney’s Silly Symphonies, “city symphonies,” and Nosferatu’s subtitle as a symphony of horror.

  • Suite — a collection of movements often derived from dances (Baroque: allemande, courante, sarabande, gigue) or drawn from a larger work. A suite is a set of dances, especially in Baroque music, often beginning with an allemande and courante. The term later also refers to a collection of excerpts drawn from an opera or ballet. Baroque examples include works by Bach, Grieg, Sibelius, Grofé, and Holst.

  • Opera — a dramatic work combining vocal music, orchestral music, and staging; includes recitative, aria, and ensemble numbers. Its early development is associated with the Florentine Camerata, Jacopo Peri, Monteverdi, and later reform efforts by Gluck and Calzabigi.

  • Overture — an orchestral introduction to an opera, oratorio, or play; may use themes from the work. French overtures (associated with Lully) typically begin with a slow dotted-rhythm opening and then move into a fast fugal section. Italian sinfonias are fast-slow-fast, and 19th-century pot-pourri overtures string together tunes from the opera.

Forms and Genres

• Operetta — a light, popular form of opera featuring spoken dialogue, romantic or comic plots, and accessible melodies (Offenbach, Gilbert and Sullivan, Lehár). Offenbach was a major figure in the French tradition, with works such as Orpheus in the Underworld and La Périchole; Johann Strauss II’s Die Fledermaus is a standard Viennese example, and Lehár’s The Merry Widow is another well-known operetta. The form was also a 19th-century precursor to the American musical and developed into the Broadway musical.

• Songs, Dances, and Dance-Based Forms

  • Ballad — a narrative song or instrumental piece that tells a story; in art music, a single-movement lyrical piano piece (Chopin, Brahms); in folk and popular traditions, a strophic song recounting a tale.

  • Ballet — a staged dance work with orchestral accompaniment; the music follows dramatic and choreographic action (Tchaikovsky’s Swan Lake, Stravinsky’s The Rite of Spring). It developed especially in seventeenth-century France and later in Russia. It is a highly codified theatrical dance form, and notable styles include white ballet and George Balanchine’s neoclassical ballet.

  • Mazurka — a Polish folk dance in triple meter (3/4 or 3/8) with an accent on the second or third beat; elevated to an art form by Chopin. Chopin wrote dozens of stylized piano mazurkas, often colored by modal touches and drone-like effects. The mazurka is also a familiar literary reference in novels such as Anna Karenina and Fathers and Sons.

  • Polka — a lively Bohemian couple dance in duple meter (2/4) with a characteristic short-short-long rhythmic pattern; popular in 19th-century ballrooms. It typically has an oom-pah accompaniment and a basic step built from step-together-step-hop. Related forms include the polka-mazurka and polka-redowa.

  • Tango — a partner dance and music genre that originated in the lower-class districts of Buenos Aires, Argentina, in the late 19th century, derived from the milonga and the habanera; typically accompanied by an orquesta típica centered on the bandoneón (a button accordion); danced in close embrace, chest to chest or at arm’s length, with syncopated rhythm. The singer-actor Carlos Gardel popularized the tango song, beginning with “Mi Noche Triste.” Astor Piazzolla, a virtuoso bandoneón player who studied with Nadia Boulanger, fused classical and jazz elements to create nuevo tango, writing Libertango, Adiós Nonino, and the four-movement Estaciones Porteñas (The Four Seasons of Buenos Aires). The dance has distinct regional forms, including Argentine, Uruguayan, and Finnish (the latter usually in a minor key, with an annual festival in Seinäjoki). Its classic repertoire includes “La cumparsita” and “El Choclo.”

  • Waltz — a smooth couple dance in triple meter (3/4) with a characteristic one-beat bass note and two-beat chord pattern; elevated to art music by Chopin and Johann Strauss II. A ballroom dance and musical genre associated with nineteenth-century ballroom culture; it is also called the valse or walzer. Notable waltzes include Johann Strauss II’s The Blue Danube and Tales from the Vienna Woods, Chopin’s Minute Waltz, and Ravel’s Valses nobles et sentimentales, and the form is closely associated with the annual Vienna New Year’s concert.

  • Madrigal — a secular polyphonic vocal work, typically for 4–6 unaccompanied voices; flourished in Renaissance Italy and Elizabethan England; famous for word-painting. Composers associated with the genre include Monteverdi, Gesualdo, Arcadelt, Palestrina, and Willaert, and English madrigals are linked to collections such as Musica Transalpina and to seconda pratica.

  • song forms
    • dumka — A dumka is a Slavic folk ballad or reflective song form that alternates melancholic and cheerful sections. Dvořák used the form in the famous Dumky Trio and in other works, while Tchaikovsky and Martinů also wrote pieces called dumkas.
  • Song types
    • Dirge — A dirge is a mournful song associated with funerals and lamentation. The term appears in music clues for funeral pieces such as settings of the Dies Irae.
  • Dance suite
    • courante movement — The courante is a court dance that became a standard movement in Baroque suites. Its French form is slower and contrapuntal, while the Italian form is faster and in triple meter.
  • Dances

    • rigaudon — A rigaudon is a lively Baroque dance in duple meter that originated in southern France. It is known for its quick hopping step and appears in dance suites such as Ravel’s Le Tombeau de Couperin and Grieg’s Holberg Suite.

    • gavotte — The gavotte is a French court dance in duple time that often begins on the third beat of the measure. It appears in Baroque suites and in later works such as Prokofiev’s Classical Symphony and the music from My Fair Lady.

    • hornpipe — The hornpipe is a lively English dance often associated with sailors. It appears in Baroque and classical works such as Handel’s Water Music and Purcell’s Abdelazer suite, and the name can also refer to a dance tune or movement marking.

  • dance forms
    • Minuet — A stately French court dance in triple time that became a standard third movement in Classical symphonies, often paired with a trio, before being displaced by the scherzo. It is sometimes treated as a rounded binary form. Famous examples include works by Boccherini, Bach, and the G-major minuet attributed to Christian Petzold in the Anna Magdalena Bach notebook.
  • lullaby forms
    • berceuse — A berceuse is a lullaby-like musical form, usually in 6/8 time. Chopin’s Op. 57 is a famous berceuse, built as a set of variations in D-flat major.
  • Dance music styles
    • tangos — Tango is an Argentine dance and musical style often performed to bandoneon accompaniment. It is famously associated with dramatic ballroom styling and songs such as “The Cell Block Tango.”
• Instrumental Character and Programmatic Genres
  • forms
    • intermezzo — An intermezzo is a short connecting piece of music, often placed between acts of an opera or play. The term also covers operatic instrumental pieces such as Mascagni’s famous intermezzo from Cavalleria rusticana.

  • Etude — a study piece designed to develop a specific technical skill; can be a concert work in its own right (Chopin’s Etudes, Liszt’s Transcendental Etudes). Chopin wrote twenty-seven famous etudes, including the “Butterfly,” “Winter Wind,” “Ocean,” and “Revolutionary” studies; notable composers who also wrote etudes include Liszt, Czerny, and Ligeti.

  • Fantasia (fantasy) — a free-form composition that does not follow a strict structural template; characterized by improvisatory passages, abrupt contrasts, and harmonic freedom.

  • Nocturne — a lyrical, introspective piano piece evoking the night; defined by a singing right-hand melody over a left-hand accompaniment pattern; associated with Field and Chopin. Its texture commonly uses an arpeggiated left-hand accompaniment and it is often cast in ternary form.

  • Prelude — an introductory piece, or a self-contained short character piece; Bach’s preludes precede fugues; Chopin’s Preludes are independent miniatures. Especially associated with Bach, Chopin, Debussy, and Gershwin in classical music; it can also be a piece that leads into a fugue or other larger composition.

  • Program music — instrumental music that depicts or narrates an extramusical idea, story, or scene, often specified by a title or printed program note; contrasts with absolute music.
    • absolute music — Absolute music is instrumental or non-representational music understood as existing for its own sake rather than depicting an external story or program.

  • Rhapsody — a single-movement work with an episodic, improvisatory structure, often drawing on folk or national themes (Liszt’s Hungarian Rhapsodies, Gershwin’s Rhapsody in Blue). It can appear in solo, orchestral, or piano settings. Other examples include Dvořák’s rhapsodies, and works by Rachmaninoff and Brahms.

  • Symphonic poem (tone poem) — a single-movement orchestral work in free form that illustrates a programmatic subject; pioneered by Liszt; examples include Strauss’s Don Juan and Smetana’s Má vlast.

  • Instrumental études
    • études — Études are short didactic instrumental studies written to develop specific technical skills, especially in the piano and violin repertoire. They are strongly associated with composers such as Czerny, Chopin, Liszt, Schumann, and later Busoni, Sorabji, Debussy, Bartók, Clementi, and Rachmaninoff. Famous examples include Chopin’s Op. 10 and Op. 25 sets, the Revolutionary Étude, and Liszt’s Transcendental Études.
  • piano character pieces
    • Bagatelle — A bagatelle is a brief, light musical piece, especially for piano, a title used by Couperin and later by Beethoven for short keyboard works. The word also names the old French ball-and-pins game that helped inspire pinball.
  • Musical forms and pieces
    • arietta — An arietta is a short aria-like vocal or instrumental piece. The term titles both a Beethoven piano sonata movement and the first piece in Grieg’s Lyric Pieces, where it later returns in “Remembrances.”
  • Pastoral music
    • pastorale — Pastorale is the musical style associated with rural scenes, drones, and evocations of shepherd life. It appears in Beethoven’s Sixth Symphony and in Baroque works by Corelli, Bach, Vivaldi, and others, often as a gentle movement imitating bagpipes or country simplicity.
  • orchestral forms
    • Tone poem — A tone poem, also called a symphonic poem, is a one-movement orchestral work of program music that depicts a story, scene, literary, pictorial, or philosophical idea. The form is usually credited to Franz Liszt, who helped establish and name it, and was later developed by composers such as Richard Strauss; other associated composers include Sibelius and Respighi. Examples include Les Préludes, Mazeppa, Tasso, Also sprach Zarathustra, Finlandia, In the Steppes of Central Asia, En Saga, Ma Vlast, Faust, and Don Quixote.
  • overtures
    • concert overtures — A concert overture is an independent orchestral overture, and Beethoven, Mendelssohn, Brahms, and Tchaikovsky all wrote famous examples. The form includes pieces like Coriolan, the Hebrides, Academic Festival Overture, and the 1812 Overture.
  • Sonatas
    • violin sonatas — Violin sonatas are works for violin and piano, with famous examples by Beethoven, Brahms, Franck, Tartini, and Bach. Common clues include Beethoven’s Kreutzer and Spring sonatas and Bach’s sonatas paired with partitas.
  • music of the spheres — The music of the spheres is the ancient idea that planetary motions produce a hidden cosmic harmony. It appears in Pythagorean tradition, Boethius, Kepler, and Cicero’s Dream of Scipio.

Related Concepts and Applications

• Compositional devices
  • word painting — Word painting, also called tone painting or text painting, is a musical device in which the notes mirror the literal meaning of the words. It appears in madrigals and in works like Handel’s Messiah, where the music rises and falls with images such as valleys and mountains.
• Motifs

  • Fate motif — The fate motif is the recurring musical idea associated with ominous inevitability in works such as Beethoven’s Fifth Symphony. Tchaikovsky’s Fourth Symphony and the opening of Shostakovich’s Eighth Symphony are other well-known examples of this kind of motif.

  • leitmotifs — Leitmotifs are recurring musical ideas used to identify a character, object, place, or emotion in a composition, especially in Wagner’s operas. They are often associated with themes like the Tristan chord or with orchestral signatures for characters and places in works such as Parsifal and The Ring cycle.

    • idée fixe — An idée fixe is a recurring musical idea or melodic motif, especially in Berlioz’s Symphonie fantastique, where it represents the composer’s obsession with Harriet Smithson. In that work it returns in altered forms across the symphony, including a grotesque parody in the finale. More generally, the term can mean a fixed or obsessive theme that reappears in different movements or passages without transposition. Andrew Norman also uses the phrase for the unifying motif in Play, borrowing Berlioz’s term for the love theme.

    • The Imperial March — The Imperial March is John Williams’s ominous Star Wars leitmotif associated with Darth Vader. It first became famous in The Empire Strikes Back and is also identified in-universe as “Glory of the Empire.”

  • BACH motif — The BACH motif is the musical cryptogram built from the notes B-flat, A, C, and B-natural. It appears in works by Bach, Liszt, Schumann, Webern, and other composers as a tribute to Johann Sebastian Bach.
• themes
  • musical theme
    • Theme — A theme is a short musical idea that can serve as the basis for variation. In Byzantine history, Themes were administrative-military districts governed by a strategos.
• Contrapuntal forms

  • a fugue — A fugue is a contrapuntal musical form built from imitation on a subject, often with countersubjects and episodes. Bach wrote major works in the form, including The Art of Fugue and The Well-Tempered Clavier.

  • Invention — An invention is a short contrapuntal Baroque keyboard piece built from two-part counterpoint. The term also appears in Bach’s title for The Well-Tempered Clavier pieces and in smaller keyboard works that avoid a dominant-answer structure.

  • ricercar — A ricercar is a Renaissance-style instrumental or contrapuntal piece that anticipates the fugue. Bach used the form in The Musical Offering, including the famous six-voice ricercar.

• Canon and round
  • Frère Jacques — A French nursery song and round about a sleeping friar or monk who must be awakened, usually sung in canon form. It is commonly known in English as “Brother John,” and has widely reused melody settings, including in Mahler’s First Symphony (the “Titan” symphony), where it appears in the third movement as a minor-key funeral march, as well as various Chinese adaptations.
• ostinati
  • Riff — A riff is a short repeated musical phrase, often serving as the backbone of a solo or accompaniment. In musical theater and jazz contexts, a riff is a compact ostinato figure that can underpin a melody or improvisation.
• musical forms
  • Keyboard pieces
    • preludes — Preludes are short musical pieces often written as introductory works or as self-contained character pieces. Chopin’s Op. 28 is the classic piano set in this form; Debussy, Bach, Rachmaninoff, Scriabin, Tárrega, Villa-Lobos, and Messiaen also wrote well-known preludes or sets of preludes.

  • rondos — A rondo is a musical form built around a recurring main theme that returns between contrasting episodes. It often appears in final movements, including works by Mozart, Beethoven, Liszt, and Schubert.

  • sonata — A sonata is a multi-movement instrumental form, especially associated with the Classical-era exposition-development-recapitulation pattern. Quizbowl clues often mention Beethoven, Scarlatti, Mozart, and related forms like the sonatina and trio sonata.
    • piano sonata — A piano sonata is a solo keyboard sonata, especially famous in the works of Beethoven, Mozart, Chopin, Liszt, Schubert, Prokofiev, and Brahms. Quizbowl clues often point to Beethoven’s Moonlight, Pathétique, Appassionata, and Tempest sonatas, along with other works like Schubert’s late sonatas and Liszt’s B minor sonata.

  • sonata form — Sonata form is a Classical musical structure built from an exposition, development, and recapitulation. It is common in first movements of Classical and Romantic symphonies and underlies many symphonies, quartets, and solo sonatas. It was central to the development of instrumental sonatas, and its name comes from the Italian word for “sounded.”

  • trio — In a march, the trio is the lyrical middle section that often modulates to the subdominant after the opening strains. The term also names the middle section of a minuet and trio, as well as the chamber form trio sonata.
• Concertos

  • percussion concerto — A percussion concerto is a concerto genre featuring a solo percussionist or percussion setup against orchestra. Works by Joseph Schwantner and Jennifer Higdon are examples, and Colin Currie is a noted dedicatee of the latter.

  • piano concerto — A piano concerto is a concerto for solo piano and orchestra, with famous examples by Beethoven, Chopin, Tchaikovsky, Rachmaninov, Grieg, and Prokofiev. Standard clues include the Emperor Concerto, bell-like openings, clarinet solos, and the general piano-plus-orchestra format.

• Ensembles

  • marching band — A marching band is a musical ensemble that performs while moving, often at parades, sporting events, and halftime shows. These groups typically separate percussion into battery and front ensemble sections and may include color guard or drum corps-style elements.

  • octet — An octet is a composition or ensemble of eight parts, such as a string or wind octet. The term also appears in chemistry as the eight-electron valence rule that stabilizes many atoms.

  • quartets — A quartet is a musical ensemble of four people, a form central to barbershop groups and jazz combos alike. Quizbowl clues often point to The Music Man, Jersey Boys, and the Million Dollar Quartet when asking for this type of group.

• symphonies
  • third symphonies — A third symphony is a symphony numbered three, such as Beethoven’s Eroica or Mendelssohn’s Scottish Symphony. Other examples include Schumann’s Rhenish Symphony, Tchaikovsky’s Polish Symphony, and Gershwin-style or programmatic works that use the same numbering.
• Musical style
  • galant — Galant was an 18th-century musical style associated with elegance, clarity, and light courtly grace. It bridged the Baroque and Classical eras and is often compared to Rococo in its polished, decorative character.

Sacred Vocal Forms and Liturgical Texts

Distinguish the musical form from the liturgical text it sets; compare sacred genres and the movements of the Mass.

• Motet — a polyphonic choral composition, usually sacred, without dramatic staging; distinct from the cantata in being a single, through-composed piece. It developed from medieval texted discant into a Renaissance religious counterpart to the madrigal. Notable examples include isorhythmic motets by Philippe de Vitry, Thomas Tallis’s Spem in alium, and Guillaume Dufay’s Nuper rosarum flores.

• Cantata — a multi-movement vocal work with soloists, chorus, and orchestra or continuo; the Baroque church cantata (Bach) alternates arias, recitatives, and chorales.

• Oratorio — a large-scale dramatic work for soloists, chorus, and orchestra on a sacred or epic subject, performed without staging (Handel’s Messiah, Haydn’s The Creation). Famous examples include Handel’s Messiah, Haydn’s The Creation, Mendelssohn’s Elijah, and Bach’s Christmas Oratorio. The genre was especially associated with English sacred music and became popular in England after the success of The Beggar’s Opera; early performances included organ concertos as interludes. Related Handel works often cited include Saul and Solomon, along with the Hallelujah Chorus and the Pifa.

• Mass ordinary

  • Gloria — Gloria is the Mass movement that follows the Kyrie and begins “Gloria in excelsis Deo.” It is also a Christian hymn beginning with the angels’ praise at the Nativity. Famous choral settings include works by Vivaldi and Handel; Vivaldi’s setting ends with a fugue on “Cum sancto spiritu.” The hymn appears in “Angels We Have Heard on High.”

  • Kyrie eleison — Kyrie eleison is the Greek Mass chant meaning “Lord, have mercy,” and it normally comes before the Gloria in the Ordinary. It often appears as a brief standalone movement in Baroque masses, and familiar settings include Mozart’s Requiem and the Missa Papae Marcelli.

• Credo — In liturgical music, the Credo is the Mass Ordinary movement proclaiming “I believe,” and it is usually the longest section of the mass. Clues often point to Beethoven’s Missa solemnis, Mozart’s Great Mass in C minor, and Bach’s Mass in B minor.
  • The CREDO — The Credo is the Latin word for “I believe” and also the name of a traditional section of the Mass. In the classical mass setting it often corresponds to the longest movement, as in Bach’s Mass in B Minor.
• Sacred music
  • chorale — A chorale is a Lutheran hymn tune, especially associated with congregational singing in German Protestant worship. It is strongly associated with J. S. Bach, who used chorale melodies in many cantatas and other sacred works.
• spirituals — African American religious songs that developed under slavery, often marked by Biblical imagery, call-and-response style, and themes of sorrow and hope. Examples include “Roll, Jordan, Roll,” “Wade in the Water,” “Sinner Man,” “Go Down Moses,” and “Swing Low, Sweet Chariot.” They were praised by W. E. B. Du Bois and Alain Locke as enduring Black musical culture and influenced composers such as Dvořák, Coleridge-Taylor, Grofé, and Tippett; they also appear in works like A Child of Our Time and Revelations.

Instruments, Voice, and Performance

Connect instruments and voices to sound production and performance technique.

Instruments

• Violin — the highest-pitched standard member of the orchestral bowed-string family, with four strings normally tuned G–D–A–E in fifths. Orchestras divide violins into first and second sections; the leader of the first violins is the concertmaster. A horsehair bow sets the strings vibrating, while the wooden body contributes resonance; the bow’s held end is the frog.¹ It is also a major solo instrument in Romantic and virtuoso repertoire, appearing in works such as Zigeunerweisen, Capriccio Espagnol, Paganini’s Caprices, Vivaldi’s Four Seasons, Bach’s Chaconne, and Beethoven’s violin sonatas, and in performances by virtuosos such as Yehudi Menuhin and Itzhak Perlman.

• Viola — a bowed string instrument larger and lower in pitch than the violin, tuned C–G–D–A in fifths. Its lower strings give a darker register. Sul C or sul G directs the player to remain on a named string, affecting color even when the same pitch could be played elsewhere.² The viola is the slightly larger string instrument related to the violin and usually notated in alto clef. Notable repertoire includes concertos by Telemann, Walton, Hindemith, Bartók, and Schnittke, as well as a solo role in Berlioz’s Harold en Italie.

• Cello / violoncello — a bowed string instrument with C–G–D–A tuning an octave below the viola. Its wide range allows bass lines and singing melodies. Cello music principally uses bass clef, with tenor and treble clefs for higher passages; identical letter names do not mean identical pitches to the viola.³

• Mandolin — a plucked string instrument of the lute family with eight strings arranged in four double courses, tuned G-D-A-E (like a violin); played with a plectrum using rapid tremolo to sustain melody; central to bluegrass and Italian folk music; used in classical works by Vivaldi and Beethoven; Bill Monroe popularized it in country/bluegrass. It is associated with players such as Chris Thile.

• Ukulele — a small, four-stringed plucked instrument derived from the Portuguese cavaquinho; introduced to Hawaii in the 1880s by Portuguese immigrants; standard tuning G-C-E-A; became emblematic of Hawaiian music and gained global popularity in the early 20th century and again in the 2000s folk revival. Its name is commonly explained from the Hawaiian word for flea. It was brought to the U.S. mainland from Hawaii around 1910 and became a brief fad among amateur musicians. It is also associated with Israel Kamakawiwoʻole’s “Somewhere Over the Rainbow” and modern performers such as Jake Shimabukuro.

• Panpipe (pan flute) — a wind instrument consisting of a graduated series of stopped pipes (tubes closed at one end) bound side by side; the player blows across the open tops; named for the Greek god Pan; found across many world cultures; in Western art music associated with pastoral imagery; Zamfir popularized the Romanian variety internationally.

• Bongo drums — a pair of small, open-bottomed hand drums of Afro-Cuban origin, joined together and played between the knees; the smaller drum (macho) and larger drum (hembra) produce contrasting tones; central to Afro-Cuban and Latin jazz percussion.

Classification (Hornbostel-Sachs)

• Idiophones — instruments that produce sound by the vibration of the instrument’s own body material, without a membrane or string; examples include the xylophone, marimba, cymbals, bells, and castanets. Common examples also include the triangle, maracas, and jaw harp.
  • cowbell — The cowbell is a percussion instrument often heard in rock music and sports chants, and it is especially associated with the Saturday Night Live “More Cowbell” sketch.

• Membranophones — instruments that produce sound by a vibrating stretched membrane; examples include the drum, kettledrum (timpani), snare drum, and tabla.

• Aerophones — instruments that produce sound by a vibrating column of air; examples include flutes, oboes, clarinets, trumpets, and organs.

• Chordophones — instruments that produce sound by vibrating strings; examples include the violin, cello, piano, guitar, and harp. They include plucked, bowed, and struck-string instruments, and are classified in the Hornbostel-Sachs system as the string family. Common examples beyond the core orchestral instruments include the kora, oud, guqin, zither, banjo, fiddle, sitar, and ukulele.

  • Aeolian harp — An aeolian harp is a stringed instrument played by the wind, often treated as a symbol in Romantic poetry. The term also names the Aeolian mode, which matches the natural minor scale.

  • Appalachian dulcimer — The Appalachian dulcimer is a string instrument native to the eastern United States and usually held in the lap. It typically has three or four strings and frets arranged to fit the diatonic scale, and it is often linked to the German scheitholz as an ancestor.

  • banjo — A string instrument central to bluegrass and old-time music, usually with four or five strings and a circular body covered by a membrane. Players use styles such as clawhammer, frailing, and Scruggs-style three-finger picking, with rolls and a distinctive short fifth string. It traces back to African instruments brought to America by enslaved people and was popularized by Earl Scruggs and Béla Fleck.

  • bass — Bass can refer to the low-pitched string instrument used in jazz and popular music, especially the electric bass or double bass. It is a core part of the rhythm section and is associated with walking bass lines, while the same word also names the lowest male vocal range.

  • Bowed instruments
    • erhu — The erhu is a two-stringed Chinese spike fiddle in the huqin family. It is played with a bow between the strings and is closely associated with Chinese opera and solo repertory such as “Horse Race.”

  • catgut — Catgut is a traditional fibrous material made from sheep or cow intestines and once widely used for strings on violins, guitars, and harps. Despite its name, it does not come from cats, and it has also been used in surgical sutures.

  • Dulcimers

    • cimbalom — The cimbalom is a hammered dulcimer played with small mallets and common in Central and Eastern European folk music. It is also called the santouri or hammered dulcimer and is often associated with Hungarian and Gypsy musical effects.

    • dulcimer — The dulcimer is a zither-family instrument found in both hammered and Appalachian forms. Its folk revival associations include Jean Ritchie, David Schnaufer, and regional traditions centered in Appalachia.

  • Electric instruments
    • electric guitar — The electric guitar is the amplified string instrument associated with Les Paul, Chuck Berry, Jimi Hendrix, B.B. King, and Sister Rosetta Tharpe. Quizbowl clues often mention pickups, solid-body designs, Gibson and Fender models, and jazz or rock pioneers.

  • guitar — The guitar is the stringed instrument of Django Reinhardt, Wes Montgomery, B. B. King, Charlie Christian, and John McLaughlin. Clues often point to its classical, electric, and slide styles, along with flamenco techniques like rasgueado and repertoire such as Concierto de Aranjuez.

  • Guitar accessories
    • capos — Capos are clamps used on string instruments, especially guitars, to shorten the vibrating length of the strings and raise the pitch. They are common in flamenco and other guitar styles where playing in different keys is useful.
  • guitars — Guitars are six-stringed plucked instruments central to jazz, blues, rock, and Spanish art-history clues alike. They show up in references to Django Reinhardt and Wes Montgomery, as well as Picasso paintings such as The Three Musicians and his Blue Period works.

    • acoustic guitar — The acoustic guitar is central to bossa nova, blues, and classical guitar repertories, and it appears in clues about João Gilberto, Blind Willie Johnson, and Joaquín Rodrigo’s Concierto de Aranjuez. It is the six-stringed instrument whose players shaped styles from Brazilian popular music to Delta blues.

    • steel guitar — The steel guitar is played horizontally on a flat surface, often with a metal slide or pick, and includes lap, console, and pedal varieties. It is strongly associated with country music and also appears in Hawaiian and gospel traditions.

  • gusli — The gusli is a Russian zither-like stringed instrument associated with folk performance and early East Slavic music. It appears in references to balalaika orchestras and to older regional variants such as those from Novgorod.

  • harp — The large plucked string instrument with seven pedals and forty-seven strings, played with the fingers and often used for solo, orchestral, and choral parts. It is known for glissandi in orchestral music and appears in works by Debussy, Ravel, Saint-Saëns, Mozart, Tchaikovsky, Britten’s Ceremony of Carols, Janáček, and Scheherazade. It is associated with performers such as Alice Coltrane, Joanna Newsom, and Nicanor Zabaleta.
    • harp (s) — The harp is a large string instrument with pedal mechanisms in its modern concert form. Clues often mention its Celtic associations, its glissando effects, and composers such as Saint-Saëns and Wagner who wrote for it.

  • harps — Harps are plucked string instruments with pedals in their modern concert form and a long mythic pedigree. They appear in everything from Britten and Debussy to tales of Orpheus, the Dagda, and the walls of Thebes.

  • koto — The koto is a traditional Japanese zither, usually with thirteen strings, and it has Korean and Chinese analogues such as the gayageum and guqin. It is central to pieces like Michio Miyagi’s Haru no Umi and to tunings associated with Yatsuhashi Kengyo.

  • Lutes
    • oud — The oud is a pear-shaped, fretless Middle Eastern lute and one of the region’s most iconic string instruments. Quizbowl clues often mention Ziryab, its supposed biblical origins, and its status as the “king of instruments” in the Arab world.

  • pipa — The pipa is a four-stringed Chinese lute often played upright and known in English as the Chinese lute. It appears in Tan Dun’s Ghost Opera and is closely associated with the virtuosity of Wu Man.

  • sitar — The sitar is a plucked Hindustani string instrument associated with Ravi Shankar and George Harrison. Its distinctive sound shows up in songs like “Norwegian Wood,” “Within You Without You,” “Love You To,” and many rock recordings that borrow its droning timbre.

  • Viola d’amore — The viola d’amore is a Baroque string instrument with bowed strings and sympathetic strings that resonate underneath. Its body often has decorative sound holes sometimes described as flaming swords.

  • zither — A zither is a plucked string instrument family with strings stretched over a flat soundbox, played in forms ranging from alpine concert zithers to Asian relatives like the qanun and gayageum. It appears in works such as Johann Strauss II’s Tales from the Vienna Woods and in the film music associated with The Third Man.

  • zithers — Zithers are plucked string instruments without a neck, with strings running over a soundboard rather than along a neck. They appear in European art music and in African traditions, including the psaltery, dulcimer, autoharp, Inanga, valiha, and marovany.

• Electrophones — instruments that produce or amplify sound through electronic means; examples include the electric guitar, synthesizer, theremin, and electric organ.

• Instrument families

  • percussion family — The percussion family includes instruments that are struck to sound, such as drums, cymbals, marimbas, and xylophones. It is commonly divided into idiophones and membranophones, with some instruments producing definite pitch and others not.

  • percussion instruments — Percussion instruments are the family of instruments that produce sound when struck, including drums, gongs, timpani, and mallet keyboards. They include the tabla and the gamelan ensemble’s many struck instruments, and they are also used in capoeira with instruments like the pandeiro and atabaque.

    • bass drum — The bass drum is the large low-pitched percussion instrument that anchors orchestral and drum-kit textures. It appears in works such as Sibelius’s The Swan of Tuonela and is also called the kick drum in modern popular music.

    • castanets — Castanets are a pair of small handheld percussion instruments made of joined shells that click when struck together. They are especially associated with Spanish flamenco and the accompaniment of dances such as the fandango, and are used in related Iberian dances. They also appear in works by composers such as Ravel and Poulenc.

    • Clappers — Clappers are percussion instruments that make sound when two striking parts are brought together, and the family includes forms such as castanets, finger cymbals, spoons, and other simple rattles and plates. They are identified here with a Yoruba origin in Nigeria before spreading into many regional variants around the world.

    • claves — Claves are a pair of hardwood sticks struck together to produce a bright rhythmic pulse in Afro-Cuban and related musics. The term also refers to the rhythmic pattern they produce, which underlies son and rumba styles and appears in highlife traditions. Cuban music often organizes these patterns into 3-2 or 2-3 clave.

    • cymbal — A cymbal is a large flat metal percussion instrument often struck for crashes. It comes in forms such as finger cymbals and suspended cymbals.

    • cymbals — Cymbals are metallic percussion instruments struck together or mounted in drum kits as crash, ride, or hi-hat types. They also appear in orchestral and ritual music, including Janissary-style effects and finger cymbals used in dance.
      • ride cymbal — The ride cymbal is the jazz cymbal used to keep time, especially in bebop drumming. Max Roach and Kenny Clarke helped make it central by shifting the basic pulse away from the bass drum.

    • djembe — The djembe is a rope-tuned goblet drum with a goatskin head that originated among the Mandinka of West Africa. It is central to Guinean and Malian drum ensembles, where players create intricate polyrhythms and can alter pitch by striking it in different ways.

    • drum — A drum is the percussion instrument named by these clues, from Christmas carols to ritual music in Java, Santeria, and South Asia. Related clues mention talking drums, timpani, mridangam, and djembe as examples of drums or drum-like instruments.

    • drums — Drums are percussion instruments played with sticks or hands that provide rhythm in many traditions, including African, Indian, Korean, West African, Afro-Cuban, jazz, and classical music. Examples include the snare drum, bass drum, timpani, tabla, djembe, bongos, frame drums, the buk, taiko, and the drum set. They can be tuned in different ways, including by heating or with pitch-changing cords, and jazz drummers such as Gene Krupa, Art Blakey, Buddy Rich, and Max Roach are often associated with them, along with solos or ostinati in classical and jazz works.
      • Tabla — The tabla is the paired-drum instrument central to Hindustani rhythm, with the smaller dayan and larger bayan. It is identified by its black tuning patches, its role in tala cycles, and its use by players such as Zakir Hussain.

    • gong — A gong is a large struck metal percussion instrument often suspended vertically and hit with a mallet. It appears in orchestral writing as a tam-tam and is central to many gamelan ensembles in Southeast Asia.

    • Mallet percussion instruments
      • marimba — The marimba is a large wooden-bar percussion instrument with resonators underneath and a range wider than that of the xylophone. It has Central American roots, especially in Guatemala, and is commonly played with multiple mallets.

    • maracas — Maracas are handheld rattles, usually used in pairs, made from gourds filled with pebbles or beads. They are common in Caribbean and Latin American music, including Cuban rumba, cha-cha, and mambo.

    • scraped idiophones
      • Güiro — The güiro is a scraped Latin American percussion instrument made from a notched gourd or similar hollow body. Players rub it with a stick or comb with metal tines to produce its distinctive rasping rhythm.

    • snare drum — The snare drum is the percussion instrument with taut snares under the head, famous for rolls and for driving rhythms in works like Boléro.

    • steelpan — A chromatically tuned percussion instrument developed in Trinidad from oil drums or hammered metal barrels, shaped to produce distinct pitched notes. It is commonly associated with Trinidad and is played in steelbands and Panorama competitions. Named variants include the boom, cellopan, guitarpan, ping pong, quadrophonic, and invader lead.

    • Tambourine — The tambourine is the handheld percussion instrument with metal jingles, often shaken or rolled with the thumb. It appears in orchestra, samba, choro, and other rhythmic settings, and can be identified by its jingling frame and drumhead.

    • Vibraslap — The vibraslap is a percussion instrument invented by Martin Cohen at Latin Percussion as a modern version of the jawbone. It produces its rattling sound when a ball is struck against a wooden chamber with metal teeth inside.

    • xylophone — The xylophone is a mallet percussion instrument with wooden bars, and many clues also accept related African and orchestral variants such as the balafon and marimba. It appears in Saint-Saëns, Shostakovich, Gershwin, and West African traditions such as the Epic of Sundiata.
• Lamellophones
  • Jew’s Harp — The Jew’s harp is a small lamellophone held to the teeth and plucked so the mouth acts as the resonator. It is a folk instrument with a long European tradition and has even inspired concertos.
• percussion — Percussion is the instrument family that includes drums, cymbals, triangles, mallet instruments, and other struck or shaken instruments. Quizbowl clues often point to its orchestral placement, rudiments, and pieces like Orff’s O Fortuna or Varèse’s Ionisation.
  • drum set — The drum set is the standard percussion setup in jazz and popular music, typically played with sticks or brushes. Jazz innovators such as Gene Krupa, Kenny Clarke, Max Roach, Buddy Rich, and Elvin Jones shaped its modern role. It provides the rhythmic foundation of the ensemble and is central to the rhythm section. Gene Krupa’s solo work with Benny Goodman helped popularize the instrument.
• free reed instruments

  • harmonica — The harmonica is a small reed instrument used widely in blues, folk, and pop music, especially the usually ten-holed diatonic type associated with blues and folk. Its modern design developed from early nineteenth-century German inventions and later mass production by Matthias Hohner. Players use bending and other techniques on diatonic or chromatic harmonicas, and musicians such as Little Walter and Toots Thielemans made it famous.

  • Concertina — A concertina is a small accordion-like free-reed instrument that sounds different on the push and pull of the bellows. It often appears in nineteenth-century literature and in descriptions of portable folk instruments.

  • accordions — Accordions are free-reed instruments with bellows, buttons, or a keyboard, and they are standard in styles such as zydeco and forró. Related relatives include the concertina and bandoneón.

  • sheng — The sheng is a Chinese free-reed mouth organ with multiple bamboo pipes that can produce polyphonic chords. Its sound is often described as bright and organ-like, and contemporary concertos have been written for it.

• Double-reed woodwinds
  • Oboe — The oboe is a soprano-range double-reed woodwind with a conical bore and a piercing tone. Its name comes from the French hautbois, meaning “high wood,” and it developed from the shawm. It was introduced by Lully in La Princesse d’Elide in Paris in 1664 and later became a standard orchestral instrument in Baroque and classical music. It is the principal double-reed woodwind and the instrument orchestras traditionally tune to concert A. Noted works associated with it in the records include Mozart’s C-major concerto, Beethoven’s Ninth Symphony, Peter and the Wolf, and solo or concerto pieces by Bach and Handel; it also has a d’amore variant.
• Flutes
  • shakuhachi — The shakuhachi is a Japanese end-blown bamboo flute associated with the komusō monks of the Fuke Zen sect. It is also heard in modern compositions such as Toru Takemitsu’s November Steps.
• Wind instruments
  • Pan flute — A pan flute is a set of end-blown tubes of graduated length, also called pan pipes. Versions appear around the world, from the Romanian nai and Chinese pái xiāo to the Peruvian siku. The instrument is named for Pan, and myths link its origin to Syrinx.
• string instruments
  • banjos — The banjo is a plucked string instrument with a circular head, associated with American folk, country, and bluegrass music. Its early history includes African and Southern American antecedents, clawhammer playing, and later three-finger styles popularized by Earl Scruggs.
• African instruments
  • mbira — The mbira is a Zimbabwean thumb piano made of metal keys mounted on a wooden soundboard. It is central to Shona music and is often played with a buzzing resonator and rattling attachments.
• Indian string instruments
  • veena — The veena is a family of Indian lute-like string instruments central to Carnatic music. A major variant is the Saraswati veena, a large instrument played with a resonating box resting on the floor.
• electronic instruments

  • Moog synthesizer — The Moog synthesizer is the classic analog electronic instrument central to Wendy Carlos’s Switched-On Bach. Its distinctive sound became influential in rock and electronic music, especially through performers such as Keith Emerson.

  • synthesizers — Synthesizers are electronic musical instruments that generate and shape sound with oscillators, filters, and envelopes. They can imitate many other sounds, are common in pop music, and may be fitted with an arpeggiator. The instrument is associated with Robert Moog’s analog designs and later digital instruments such as the Yamaha DX7; Wendy Carlos used a Moog synthesizer on Switched-On Bach and on The Shining’s theme.

Instrument Technique and Mechanics

• bowed string instruments
  • bows — The horsehair implement used to play string instruments such as the violin, viola, and cello. It is held in different grips, including French and German grips, and is kept rosined; the adjustable frog is part of the bow’s structure. Pizzicato is the contrasting technique of playing without a bow.
    • a bow — A bow is a stringed implement used to play instruments such as the double bass and is also the weapon used in many epic and mythic contests. It appears in stories like the Epic of Sundiata and the Mahabharata.
• bowing accessories
  • Rosin — Rosin, also called colophony, is a resin-based substance applied to violin and other string instrument bow hairs. It increases friction so the bow can grip the strings and produce sound.
• electronic musical instruments
  • Synthesizer — An electronic musical instrument that generates sound from electrical signals. It became central to popular and electronic music through instruments associated with Robert Moog and Wendy Carlos, including the Minimoog, ARP instruments, and the DX7; it is also associated with works such as Switched-On Bach and the TRON soundtrack.
• Instrument mechanisms
  • pedals — Foot-operated levers or devices used on instruments to alter sound, resonance, or tuning. On the organ, the pedalboard is the third stave below the manuals; pianos commonly have sustain, una corda, and sostenuto pedals, and most pianos have three pedals. Harps have seven pedals that change string pitch, and timpani were later given similar foot-operated controls for tuning.
• Keyboard and lute styles
  • Broken style
    • style brisé — Style brisé is the broken, arpeggiated style of keyboard and lute writing in which the notes of chords are dispersed rather than struck together. François and Louis Couperin are closely associated with this French Baroque idiom, also called style luthé.
• Orchestration and instrumentation
  • orchestration — Orchestration is the art of assigning musical material to particular instruments in an ensemble to shape texture and effect. Clues often mention treatises by Berlioz, Rimsky-Korsakov, Richard Strauss, Walter Piston, Cecil Forsyth, or Samuel Adler, along with examples like Ravel’s orchestration of Pictures at an Exhibition.

    • Klangfarbenmelodie — Klangfarbenmelodie is a compositional technique in which a melodic line is distributed among different instrumental timbres instead of staying in one voice. Schoenberg coined the term, and Webern used it prominently in orchestral settings and in his Bach arrangements.

    • percussion section — The percussion section is the part of the orchestra made up of instruments struck, shaken, or scraped, including drums, cymbals, timpani, and xylophones. It drives pieces such as Ravel’s Boléro, Varèse’s Ionisation, and a concerto by Jennifer Higdon, and it may include auxiliary and pitched instruments.

    • Woodwind instruments

      • jazz flute — Jazz flute is a niche jazz woodwind associated with players like Herbie Mann, Paul Horn, Sam Most, and Rahsaan Roland Kirk. Its softer sound made it less common than saxophone or clarinet until the bebop era and later fusion years.
• Piano
  • playing piano — Playing piano is the key activity in questions on works such as Elfriede Jelinek’s The Piano Teacher, in which Erika Kohut is a repressed teacher and pianist. It also appears in clues about Marguerite Duras’s Moderato Cantabile and Thomas Mann’s Tristan.
• Piano pedals
  • Sostenuto pedal — The sostenuto pedal is the piano’s middle pedal, used to hold selected notes while allowing others to release normally. It is often contrasted with the sustain pedal and can be used to keep dissonant sounds from blurring together.
• Piano repertoire
  • for the left hand only — This phrase describes works written for one hand, especially the left hand, and it is most famously associated with Maurice Ravel’s piano concerto for Paul Wittgenstein. Scriabin also used this unusual scoring in a piano piece, making it a recurring clue for concert works commissioned for a one-handed performer.
• Playing a musical instrument
  • Piano
    • play the piano — In the final scene of A Long Day’s Journey into Night, Mary descends in a trance to play the piano. The moment recalls the convent lessons she once practiced before her injured hands prevented her from playing.
• plectrums
  • Plectrum — A guitar pick is officially called a plectrum. It is the small flat object used to pluck or strum stringed instruments.
• String technique
  • scordatura — Scordatura is the technique of retuning a string instrument away from standard pitch. It is used for effects in works such as Danse Macabre and the Rosary Sonatas.
• violin techniques
  • left hand pizzicato — Left hand pizzicato is a violin technique in which the left hand plucks the string instead of only stopping notes. It appears in showpieces by Paganini and Ernst and is often marked with a small cross or plus sign in the score.
• String instrument anatomy
  • frets — Frets are the fixed strips on the neck of many stringed instruments that divide the scale into set pitches. They are the feature that oud-type instruments often lack, allowing slides and quarter tones, and they may be dressed, angled, or even made from gut in older instruments.
• String techniques

  • artificial harmonics — Artificial harmonics are a string technique that produces a ghostly, overtone-rich pitch by lightly touching a string while stopping it with another finger. They are a favorite coloristic effect in orchestral writing, especially in passages by Shostakovich and Ravel.

  • Flautando — Flautando is a bowed-string technique meaning to play gently near the bridge of the instrument. It is a performance instruction rather than a tempo marking, and it produces a thinner, more glassy tone.

  • natural harmonics — Natural harmonics are the bell-like notes produced by lightly touching a string at a node instead of pressing it to the fretboard. They are common on guitar and other stringed instruments, and the electric-guitar variant can be contrasted with artificial or pinch harmonics.

  • double stop — A double stop is a string technique in which two notes are played simultaneously on adjacent strings. It is a common virtuosic device for violin and cello repertoire, especially in works by Paganini, Bach, and others.

• Wind performance technique
  • embouchure — Embouchure is the mouth position and shaping used to produce sound on brass and other wind instruments. It also refers more broadly to the opening formed by the lips, cheeks, and face muscles around the instrument’s mouthpiece.
• Wind performance techniques
  • circular breathing — Circular breathing is a wind-performance technique that allows a musician to sustain an uninterrupted tone by inhaling through the nose while pushing air out through the mouth. It is used on instruments such as the didgeridoo, shakuhachi, mey, and dizi.
• string instrument accessories
  • capo — A capo is a clamp-like device used on stringed instruments to change the key without changing the fingering pattern. The word comes from the Italian for ‘head’.
• String instrument acoustics
  • wolf tones — Wolf tones are a problem in bowed string instruments when a played note matches the instrument’s natural resonance and causes the sound to wobble or break up. They are especially associated with cellos and violins, and they can sometimes be reduced with small mechanical or magnetic dampers.

Related Concepts and Applications

• keyboard instruments — Keyboard instruments are the broad family that includes the piano, harpsichord, clavichord, and organ. Bach wrote landmark collections for them, including the Inventions, the Well-Tempered Clavier, and the Clavier-Übung volumes.

  • A grand piano — A grand piano is a large horizontal piano, and the Bösendorfer Imperial is a famous example with an extended keyboard. The clues emphasize its size, cost, and 107 keys.

  • a piano — A piano is the instrument mentioned in several literature clues, including Little Women, Vanity Fair, and plays or novels where it functions as a gift or symbol. Its recurring role in drama and fiction makes it a common answer when clues point to a blue piano or a prized household instrument.

  • accordion — The accordion is a handheld bellows-driven free-reed instrument played by pushing air through the bellows while pressing buttons or a keyboard. It is especially associated with polka, musette, zydeco, norteño, forró, and other folk or popular styles. Related instruments include the concertina and bandoneon, and its button-and-key layout makes it a distinctive portable squeezebox.

  • clavichord — The clavichord is a quiet keyboard instrument in which brass tangents strike and stop the strings, allowing fretted and unfretted variants. C. P. E. Bach favored it for a sensitive style, and its sound is produced by tangents rather than plucked strings.

  • clavier — A clavier is a keyboard instrument or the keyboard section of an instrument. The word appears frequently in Bach’s keyboard music.

  • Electric piano — An electric piano is a keyboard instrument that generates sound electronically rather than by strings, with classic models including the Fender Rhodes and Wurlitzer. It is a staple of jazz fusion and shows up in famous grooves like the opening of “Riders on the Storm.” Its tones also appear in rock and pop recordings such as “Baby, I Love Your Way” and “La femme d’argent.”

  • harpsichord — The harpsichord is a plucked-string Baroque keyboard instrument whose strings are plucked by jacks, giving it a bright, articulated sound and little piano-style dynamic control because the strings are not hammered. It dominated Baroque keyboard music before the pianoforte and was later replaced in prominence by the piano. Associated works include Bach’s Goldberg Variations, Italian Concerto, and fifth Brandenburg Concerto; Couperin’s unmeasured pieces and The Mysterious Barricades; Rameau’s Pièces de clavecin; Handel’s Harmonious Blacksmith; and concertos written for Wanda Landowska and Manuel de Falla. Related smaller varieties include the virginal and spinet, and it was revived in the 20th century by performers and builders, especially through Wanda Landowska.

  • Keytar — A keytar is a shoulder-strapped keyboard instrument shaped partly like an electric guitar. It was popularized by synth models such as the Moog Liberation and Yamaha SHS and appears in music videos and live performances.

  • organ — A keyboard instrument powered by pipes or electricity, the organ is a staple of churches and concert halls. Quizbowl clues often mention Bach’s Toccata and Fugue in D minor, Handel’s concertos, Wurlitzer theater organs, and Hammond organs used in soul and rock. The instrument has manuals and pedals and can be played as a massive pipe organ or a smaller electric version.

  • Piano pedals
    • sustain pedal — The sustain pedal is the piano pedal operated by the right foot that lifts all the dampers at once. It creates the long, resonant sound heard in works such as Beethoven’s Moonlight Sonata and the Waldstein Sonata.
  • virginal — The virginal is a small Renaissance keyboard instrument related to the harpsichord. It appears in English and Flemish keyboard collections and is often associated with domestic music-making and paintings by Vermeer.
• Keyboard wind instruments
  • Melodica — The melodica is a small keyboard wind instrument played by blowing through a mouthpiece while pressing its keys. Its sound is often compared to an accordion or keyboard harmonica, and it appears in songs by New Order and Gorillaz.
• Lutes
  • biwa — The biwa is a Japanese lute, usually played with a plectrum called a bachi. It is especially associated with recitations of the Tale of the Heike and with later Japanese art music compositions.
• mirlitons
  • kazoo — The kazoo is a small mirliton instrument played by humming into it to produce a buzzing tone. It has been used in novelty, jazz, and orchestral contexts, and is associated with Eden, New York as a major manufacturing center.
• Musical instruments — Musical instruments are objects made to produce sound, from strings and flutes to drums and veenas. Different traditions classify them in different ways, such as the Hornbostel-Sachs system or the Chinese bāyīn categories, and they are central to both ritual and performance across cultures. Examples include the veena, bansuri, aulos, lyre, and shamisen, and they appear prominently in myths and theatrical traditions, such as Krishna’s flute and Apollo’s lyre.
  • conga drums
    • Conga — A conga is a narrow, single-headed Cuban drum used in Afro-Caribbean music, especially rumba, salsa, and reggae. The name also refers to a Cuban dance marked by the step-step-step-kick motion.
• plucked string instruments
  • shamisen — The shamisen is the Japanese three-stringed plucked instrument often compared to a banjo. It is central to kabuki and bunraku accompaniment, and it appears in styles such as tsugaru and nagauta.
• Saxophones

  • alto or tenor saxophone — The alto saxophone and tenor saxophone are common primary instruments associated with jazz players such as Ornette Coleman and John Coltrane.

  • baritone saxophone — The baritone saxophone is the E-flat saxophone below the tenor, common in jazz big bands and soloed by players like Gerry Mulligan and Pepper Adams. It appears on recordings such as Birth of the Cool, Moanin’, and Night Lights, and is often shortened to bari sax.

  • tenor saxophone — A common jazz reed instrument associated with John Coltrane, Sonny Rollins, Coleman Hawkins, Lester Young, Ben Webster, and Johnny Hodges. It is central to albums such as Saxophone Colossus, Tenor Madness, Giant Steps, A Love Supreme, and My Favorite Things, and to tunes including “Airegin,” “St. Thomas,” and “Naima.” It is the instrument played by Kamasi Washington and is often identified with hard bop and modern jazz, long solos, “sheets of sound,” and a powerful middle register.

• Transposing instruments
  • D, F, A flat — For B-flat trumpet transposition, the concert pitches of the written notes E, G, and B-flat are D, F, and A-flat. Transposed instruments sound a whole step lower than written, so the sounding pitch must be adjusted accordingly.
• Wind instruments
  • bagpipes — Bagpipes are a family of reed wind instruments, classically associated with Scotland, built around a bag that supplies air to a chanter or melody pipe and one or more drones. Regional forms include the Great Highland bagpipe, the uilleann pipes, the zampogna, the gaida, and the dudy/Dudelsack. They appear in works by Beethoven and Haydn, as well as Peter Maxwell Davies’s An Orkney Wedding, with Sunrise.
    • Bagpipe — The bagpipe is a reed instrument with a constant air reservoir, best known in its Scottish Highland form. Quizbowl clues often mention its Roman name tibia utricularis, regional variants like the gaita and biniou, and its long association with Celtic and British music.
  • brass instruments — Brass instruments are a family of wind instruments played by vibrating the lips into a mouthpiece. They include the horn and trombone, and they are named for the metal traditionally associated with them.
    • Accessories
      • mutes — Mutes are accessories inserted into brass instruments to alter timbre, with common types including straight and cup mutes. They are also described in clues about jazz trumpet color, con sordino markings, and the distinctive muted sound of Miles Davis.
        • mute — A mute is a device placed in a brass instrument’s bell to alter its volume or timbre. Common varieties include straight, cup, wah-wah, and Harmon mutes.

    • Baritone horn — The baritone horn is a brass instrument related to the cornet, flugelhorn, and euphonium. It typically has three valves and a narrower bore than a euphonium.

    • Bass Tuba — The bass tuba is the large low brass instrument for which Ralph Vaughan Williams wrote a concerto in F minor. Its marching-band cousin is the sousaphone, a coiled version designed to rest on the player’s shoulder.

    • brass — Brass is a copper-zinc alloy used in instruments and hardware such as trumpets, trombones, and doorknobs. In music classification, brass refers to the wind-instrument family treated as non-free aerophones, and clues may also point to works named for Brasshouse or Blue Train-style titles ending in the word.

    • bugle — The bugle is a simple brass instrument without valves, so pitch is changed by the player’s embouchure rather than keys or buttons. It is closely associated with military calls such as “Taps,” and cornet design historically developed from it.

    • Flugelhorn — The flugelhorn is a brass instrument with a wider bore and mellower sound than a trumpet or cornet. Jazz players such as Art Farmer also used flumpets, hybrid instruments combining trumpet and flugelhorn characteristics.

    • French horn — A coiled brass instrument typically pitched in F, often in double-horn form, played with the hand partly in the bell for hand-stopping. It is associated with hunting calls and the older natural horn, later valve mechanisms, and works by Mozart and Haydn; Brahms, Strauss, Dennis Brain, and Prokofiev’s Peter and the Wolf are also standard associations, with the horn used for the wolf theme. The broader horn family also includes ceremonial instruments such as the shofar.

    • Mellophone — A brass instrument used in marching bands and drum and bugle corps, where it often takes the place of the French horn. It is usually played with a cup mouthpiece and is valued for being easier to carry and play while marching. It comes in different keys, especially E-flat, F, and G versions.

    • slide trombone — The slide trombone is a brass instrument whose pitch is changed by moving a slide rather than using valves. It was central to swing-era jazz through players like Tommy Dorsey, Glenn Miller, and Tricky Sam Nanton. Its classic jazz techniques include tailgate playing and the distinctive wa-wa mute effect. Later musical-theater arrangements also feature it prominently, especially in Hadestown.

    • Sousaphone — The sousaphone is the large marching-band brass instrument named for John Philip Sousa. It is a tuba-like instrument with a wraparound body and a forward-facing bell that projects over the player’s shoulder.

    • trombone — The trombone is the brass instrument whose pitch changes with a slide, making it famous for glissandi and big band lines played by Glenn Miller and Tommy Dorsey. It also appears in orchestral works such as Mozart’s Requiem and in bandwriting from Berlioz to Holst.

    • trombone technique
      • slide — A slide is a musical device that lets trombones glide smoothly between pitches and gives trumpets in some baroque music access to lower keys. It is also the baseball action associated with the song about “Slide, Kelly, Slide.”

    • trombones — The trombone is a brass instrument with a telescoping slide used to change pitch, usually built in tenor and bass ranges. Its older predecessor was the sackbut, and it became a standard voice in jazz and orchestral writing alike.

    • Trumpet — A high brass instrument with three valves, associated in jazz with Louis Armstrong, Dizzy Gillespie, Miles Davis, and Wynton Marsalis. It appears prominently in classical repertoire, including Bach’s Brandenburg Concerto No. 2, Haydn and Hummel concertos, Arutiunian, Shostakovich, Dvořák, Mahler’s Fifth Symphony opening, Ives, and Copland. Jazz associations include Gillespie’s A Night in Tunisia and Salt Peanuts, Davis’s Kind of Blue, and Armstrong’s recording of What a Wonderful World; its “voluntary” is often heard at weddings.
  • Didgeridoo — The didgeridoo is a traditional Indigenous Australian drone instrument, often played with circular breathing and accompanied by clapsticks. It is traditionally made from termite-hollowed eucalyptus and is especially associated with Arnhem Land, where it is known by regional names such as yidaki, mandapul, and mako.
• Woodwind instruments

  • fife — A fife is a small transverse flute related to the piccolo and often paired with drums in military music. In colonial America, it was a common wind instrument in marching and military bands.

  • alto saxophone — The alto saxophone is the jazz and classical woodwind associated with Charlie Parker, Cannonball Adderley, Ornette Coleman, and John Coltrane in these clues. Other recurring markers include Glazunov’s concerto, Ravel’s Pictures at an Exhibition, and the instrument’s Belgian inventor, Adolphe Sax.

  • contrabassoon — The contrabassoon is the deep-voiced double reed instrument pitched an octave below the bassoon. It is often used for special coloristic effects, such as the creaturely sound in Dukas’s The Sorcerer’s Apprentice.

  • double-reed instruments
    • shawm — The shawm was a loud medieval double-reed woodwind and an ancestor of the oboe. Its piercing sound made it useful for outdoor performance and military bands, and related forms spread widely across Europe and beyond.
  • Oboes
    • English horn — The English horn, or cor anglais, is an alto oboe pitched in F and played with a double reed. It is the alto member of the oboe family, with a lower range than the standard oboe and often described as the viola-like member of the family. It is often doubled by oboists. Composers use it for lyrical solos and plaintive pastoral color; notable appearances include Dvořák’s New World Symphony, Haydn’s “Philosopher” Symphony, Sibelius’s The Swan of Tuonela, and Rossini’s William Tell Overture, with other examples by Borodin, Berlioz, and Rodrigo.
  • Saxophone — The saxophone is a single-reed, conical brass woodwind used in jazz and concert music. It is associated with players such as Charlie Parker, John Coltrane, Cannonball Adderley, Wayne Shorter, and Ornette Coleman, and with the jazz fusion group Weather Report; Bill Clinton also played it. Common sizes include soprano, alto, tenor, and baritone, and it appears in works such as A Love Supreme, Giant Steps, Kind of Blue, The Shape of Jazz to Come, and Lincolnshire Posy.

• woodwinds — Woodwinds are the musical family that includes the flute, oboe, clarinet, and bassoon. Quizbowl clues often tie them to Prokofiev’s Peter and the Wolf and to orchestral color in Mozart and other composers.

• jazz ensembles
  • jazz trios — Jazz trios are usually piano-led ensembles with bass and drums, and they became a major format for modern jazz improvisers. Examples in the clues include Bill Evans’s groups, Keith Jarrett’s standards trio, The Bad Plus, and Brad Mehldau’s trio work.
• Violinists
  • Joshua Bell — Joshua Bell is the American violin virtuoso known for his solo on The Red Violin soundtrack. He also became famous for an incognito 2007 subway performance in Washington, D.C., and for playing a Stradivarius violin.
• Vibraphonists
  • Gary Burton — Gary Burton is the jazz vibraphonist famous for pioneering four-mallet technique and for playing with a sustained, ringing tone. He is associated with the vibraphone lineage of Lionel Hampton, Milt Jackson, Bobby Hutcherson, and Red Norvo.
• Drum corps
  • Drum Corps International — Drum Corps International is the governing body for elite drum and bugle corps in the United States. Its ensembles include the Cavaliers, the Phantom Regiment, and the Carolina Crown.

Vocal Performance Terms

• A cappella — singing without instrumental accompaniment; from Italian “in the manner of the chapel” (referring to chapel choirs that performed unaccompanied); encompasses everything from Renaissance sacred polyphony (Palestrina’s motets) to barbershop quartets to contemporary collegiate groups; in pop contexts, multi-voice unaccompanied arrangements have been popularized by groups such as Pentatonix and via the Pitch Perfect films. It is the standard term for unaccompanied vocal performance, from church singing to beatbox-heavy groups like Pentatonix.

• Mariachi — a Mexican ensemble genre and performance tradition originating in Jalisco; typically features violins, trumpets, the vihuela (high-pitched five-string guitar), guitarrón (large fretless bass guitar), and guitarra de golpe; the ensemble performs son jalisciense, huapango, ranchera, and bolero ranchero repertoire; recognized by UNESCO on the Intangible Cultural Heritage list (2011); the charro costume (suit with embroidered jacket and wide-brimmed sombrero) is the iconic dress.

• Voice types (SATB) — the four standard choral parts: Soprano (highest female), Alto (lower female), Tenor (higher male), Bass (lowest male); four-part SATB writing is the standard model for common-practice harmony pedagogy.

• Coloratura soprano — a soprano voice with exceptional agility for rapid runs, trills, and ornamental figures; roles include the Queen of the Night (Magic Flute) and Lucia di Lammermoor. A coloratura soprano is a soprano voice type marked by rapid runs, trills, and other elaborate ornamentation in the upper register. Roles such as the Queen of the Night in The Magic Flute and Lucia di Lammermoor are classic examples.

• Mezzo-soprano — a female voice between soprano and contralto in range; warm middle register; roles include Carmen, Octavian (Der Rosenkavalier), and many Handel castrato parts transposed. It is a common operatic range for roles that need a middle female register, including trouser roles and many bel canto parts.

• Baritone — a male voice between bass and tenor; the most common male voice type; includes operatic roles such as Don Giovanni, Figaro, and Rigoletto. It is also associated with roles such as Onegin and with the villains in Lucia di Lammermoor and Tosca.

• A cappella groups
  • Whiffenpoofs — The Whiffenpoofs are Yale University’s well-known a cappella group. They are a recurring Yale cultural reference and are commonly associated with collegiate singing performances and parody appearances.
• Vocal forms

  • call and response — Call and response is an antiphonal musical structure in which a leader sings a phrase and the group answers with a refrain. It is common in African music, gospel, spirituals, samba, and Caribbean forms such as coro-pregon and sea-shanty traditions.

  • patter song — A patter song is a comic musical number sung in rapid-fire, tongue-twisting lyrics. Gilbert and Sullivan made the form famous with numbers like the Major-General’s Song and “My Name Is John Wellington Wells.”

• Vocal percussion
  • beatboxing — Beatboxing is vocal percussion that imitates drum sounds, drum machines, and other rhythm sounds using the mouth and voice. Common techniques include the lip roll and inward or outward snare sounds. Performers such as Rahzel, Tom Thum, and Pentatonix’s Kevin Olusola helped popularize it.
• vocal ranges

  • alto — Alto is the vocal range between tenor and soprano, and the term also appears in instrument names such as the alto saxophone and the viola’s alto clef. In sacred and choral music, solo parts for this range are often written for a female or male alto voice.

  • mezzo — Mezzo is the Italian prefix meaning “medium,” as in mezzo-forte and mezzo-piano. It also appears in voice types such as mezzo-soprano, which typically sings the alto line.

• vocal registers
  • falsetto — Falsetto is a high vocal register used to sing above a performer’s normal range. It appears in yodeling, Hawaiian leo kiʻekiʻe, Tiny Tim’s performance style, and the tenor part in Carmina Burana’s “In Taberna.”
• vocal technique

  • melisma — Melisma is a vocal technique in which a single syllable is sung across multiple notes. It is common in chant, Renaissance polyphony, and later popular music, where it produces extended runs on words such as “gloria” or “you.”

  • Sotto voce — Sotto voce is a singing technique in which the voice is lowered for emphasis. The Italian term means ‘in an undertone.’

  • Sprechstimme — Sprechstimme is Arnold Schoenberg’s half-spoken, half-sung vocal technique, a speech-like style between speaking and singing. The performer follows the written rhythm and approximate pitch, then lets the voice slide away like speech. It is used in Pierrot Lunaire and appears in works such as Transfigured Night and Moses und Aron.

  • whistling — Whistling is a musical technique and also a vocal sound used in songs ranging from Otis Redding’s “Sittin’ on the Dock of the Bay” to pop and film music. It can also refer to a form of language transmission, such as whistled speech in places like the Canary Islands.

• vocal techniques

  • human voices — Human voices are used as instruments in techniques ranging from choir singing to overtone singing and spoken song. Clues may point to falsetto, throat singing, konnakol, or other vocal styles that treat the voice as a musical instrument.

  • humming — Humming is vocalizing with the mouth closed or through the nose, often used as a distinctive musical or atmospheric effect. It appears in works ranging from Greek tragedy to opera and choral music.

  • melismas — A melisma is a vocal passage in which a single syllable is set to multiple notes. Medieval chant traditions used it extensively, especially in sequences and other ornate settings of plainchant.

  • throat singing — Throat singing is a vocal technique in which a singer produces multiple pitches at once, especially in Mongolian and Tuvan traditions such as khoomei, sygyt, and kargyraa. Related forms include Inuit katajjaq and Ainu rekuhkara, and the style is often performed with a drone and overtone-rich resonance.

  • yodeling — A vocal technique marked by rapid shifts between chest voice and falsetto or head voice, associated with Alpine folk singing and American singing-cowboy music. Jimmie Rodgers helped popularize it in country recordings, including his Blue Yodel songs. It later appeared in Western films and became an internet joke after Mason Ramsey was filmed doing it in a Walmart.

• Vocalists — Vocalists are performers who use the voice as their primary instrument, including in a cappella traditions, jazz scat singing, stylized recitative such as Sprechstimme, qawwali, and barbershop. Singers also appear in Wagner’s operas and in South Indian classical music, where they may use a shruti box or tanpura and perform varnams and kritis.

• voice
  • human voice — The human voice is the “instrument” behind singing, chanting, and a cappella performance, and it can be treated as a solo or ensemble part in styles from bel canto to sprechgesang. Quizbowl clues often point to vocal techniques such as falsetto, yodeling, khöömei from Tuva, and katajjaq Inuit throat singing.
• voice types

  • Mezzo-soprano, contralto — Mezzo-soprano and contralto are the two lower female voice types used to describe singers whose ranges sit below soprano but above the lowest male registers.

  • Soprano — The highest female vocal range, used for roles such as the Queen of the Night in Mozart’s Magic Flute and the title voice in Bellini’s Norma. Famous singers in this register include Maria Callas, Joan Sutherland, Beverly Sills, and Natalie Dessay. The term can also refer more generally to the highest standard human voice type.

• singing — Singing is the vocal performance often used in poetry, religion, and art. It appears in traditions ranging from Walt Whitman’s chants to Hindu devotional practice and Vedic ritual recitation, including bhajan, kirtan, aarti, and the udgātri priest’s role, and is also central to Native American church ceremonies, Tibetan and Tuva throat singing, and other folk traditions such as cantorie.

Dynamics and Articulation

Dynamic Markings

• Pianissimo (pp) — very soft.

• Piano (p) — soft.

• Mezzo-piano (mp) — moderately soft.

• Mezzo-forte (mf) — moderately loud.

• Forte (f) — loud.

• Fortissimo (ff) — very loud.

• Sforzando (sfz) — a sudden, strong accent on a single note.

• Crescendo (<) — gradually getting louder. In notation it is often drawn as a hairpin; Ravel’s Boléro is a famous long example built around one.

• Decrescendo / diminuendo (>) — gradually getting softer.

• Expression

  • dynamics — In music, this term refers to changes in loudness, marked with directions like piano and forte. In physics, related forms include magnetohydrodynamics and quantum chromodynamics.

    • crescendo (kreh-SHEN-doh) — A crescendo is a gradual increase in volume, and Rossini’s name is attached to a famous “Rossini crescendo” effect that builds excitement by layering musical elements. The term is common in orchestration and solo performance alike, especially in piano and symphonic writing.

    • Diminuendo — Diminuendo is a musical direction for a gradual decrease in volume. It is the opposite of crescendo and is often abbreviated dim.

    • forte — Forte is the musical dynamic marking for loudness, written with the letter f. Its stronger form is fortissimo, and it contrasts with piano as the softer dynamic.

    • fortissimo — Fortissimo is the musical dynamic marking for very loud playing, abbreviated ff. It is the forceful accent heard, for example, in the famous opening chord of Haydn’s Surprise Symphony.

    • Loud — Loud is the contrasting quality paired with ‘soft’ in music and other contexts. It appears in titles and descriptions ranging from extreme music writing to the Pixies documentary LoudQUIETloud.

    • pianissimo — Pianissimo is the musical dynamic marking for playing very softly, even softer than piano, and is often abbreviated pp.

    • piano AND forte — Piano and forte are the Italian dynamic markings for soft and loud. They appear in musical notation as p and f, and combine in words like pianoforte and fortepiano.

Articulation Markings

• Articulation markings
  • sforzando — A musical direction marking a sudden, strong accent or sharp initial attack on a note. It is often used by composers such as Beethoven and Haydn, including in a stormy passage of Beethoven’s Moonlight Sonata.

• Legato — smooth, connected playing; often indicated by a slur. It is the opposite of staccato.

• Staccato — short, detached notes; indicated by a dot above or below the notehead. It is the opposite of legato and can appear in passages that require sharply separated bowing or phrasing.

• Staccatissimo — extremely short and detached; indicated by a wedge.

• Tenuto — hold the note for its full value; slight emphasis; indicated by a horizontal line.

• Accent (>) — a stressed attack on a note.

• Marcato (^) — marked, emphatic attack; stronger than a regular accent. Also called a stress accent; in notation it can appear as a sforzando mark, and an extreme form is martellato.

• Portato — slightly separated but not fully staccato; tenuto dots under a slur.

• Pizzicato — plucking string instrument strings rather than bowing. It is often marked arco to return to bowed playing. Notable uses include Tchaikovsky’s Fourth Symphony, Ravel’s String Quartet in F, Paganini’s left-hand pizzicato, and Bartók’s snapped-string pizzicato.

• Arco — return to bowing after pizzicato.

• Tremolo — rapid repetition of a single note or rapid alternation between two notes. Tremolo is a musical effect created by rapid repetition of a note or rapid fluctuation in volume. It is often confused with vibrato and can be produced on instruments such as guitar through mechanical or electronic means.

• Trill (tr) — rapid alternation between a note and the step above it.

• Mordent — a brief, single alternation between a note and the step below it (lower mordent) or above it (upper mordent / inverted mordent); notated with a wavy line, with or without a vertical slash.

• Turn — an ornament that moves from the note above the principal note, to the principal note, to the note below, and back; the inverted turn reverses the direction.

• Appoggiatura — an ornamental note (usually a step above or below) that takes time value from the main note and resolves stepwise; creates an expressive dissonance on the beat. An appoggiatura is a musical ornament in which a non-chord tone leans on a principal note before resolving. The long appoggiatura takes some of its time value from the note it resolves to, while the short form is written as a grace note.

• Acciaccatura — a “crushed” grace note played as quickly as possible before the main note, barely receiving any time value; notated as a small note with a slash through its stem.

• Grace note — a small-sized ornamental note played quickly before the main note; a generic term covering both appoggiaturas and acciaccaturas. It is often shown as a small slashed note.

• Glissando — a slide through all pitches between two notes. It is common in piano, harp, clarinet, and orchestral writing, and a famous example opens Gershwin’s Rhapsody in Blue.

• Vibrato — slight, rapid fluctuation in pitch for expressive warmth. Used by singers and instrumentalists; its extent describes how wide the pitch oscillates. It is distinct from a trill because it centers on a single pitch.

• Bowing techniques
  • spiccato — Spiccato is a violin bowing technique in which the bow bounces lightly on the string, producing short, separated notes. It is often abbreviated sp. in musical notation and is contrasted with smoother, more sustained bow strokes.
• articulation techniques
  • double tonguing — Double tonguing is a wind-instrument articulation technique used for very rapid passages. Arban’s method teaches it with syllables like “tu-ku,” and it is especially associated with trumpet performance.
• ornaments — Ornaments are decorative musical embellishments such as trills, mordents, turns, and grace notes. Baroque performers often improvised them to add interest to a melody or harmony.

  • grace notes — Grace notes are very short ornamental notes played just before a principal note, usually printed in smaller type. In older usage the term could include appoggiaturas, while in modern usage it often refers more narrowly to acciaccaturas.

  • trill — A trill is a rapid alternation between neighboring notes, or between repeated contacts in speech sounds. It appears in ornamented violin writing, in Tartini’s Devil’s Trill Sonata, and in cadential figures marked with a wavy line.

  • Trill(s) — A trill is a rapid alternation between two adjacent notes, common as an ornament in Baroque and later music. Tartini’s Devil’s Trill Sonata is a standard clue, and the notation is often shown with a wavy line.

  • trills — Trills are rapid alternations between neighboring notes and are among the most common ornaments in Baroque and later keyboard and string music. They appear in Bach’s ornament tables, in Vivaldi, and in pieces nicknamed for a devil’s trill.

• performance techniques
  • portamento — Portamento is the smooth glide between notes, especially associated with vocal writing and bel canto style. The term is sometimes treated like glissando, though writers such as Emilio Pujol distinguish the two.

Selected Italian and Other Terms

• Da capo (D.C.) — repeat from the beginning.

• Dal segno (D.S.) — repeat from the sign (𝄋).

• Fine — the end; used with da capo or dal segno to indicate where to stop.

• Coda — a concluding section appended to a form.

• Exposition — opening section; also used for fugues (see above).

• Con brio — with vigor. Con moto — with motion. Con fuoco — with fire.

• Dolce — sweetly. Espressivo — expressively. Grazioso — gracefully.

• Cantabile — in a singing style.

• Sostenuto — sustained; held.

• Subito (sub.) — suddenly (e.g., subito piano = suddenly soft).

• Simile — continue in the same manner as marked.

• Ossia — an alternative passage provided for a performer.

• Divisi (div.) — divide; string sections split into separate parts.

• Tacet — silent; do not play for an extended passage.

• Col legno — with the wood of the bow (strings strike strings with the stick).

• Sul ponticello — bow near the bridge for a glassy, nasal tone. It is contrasted with sul tasto, where the bow moves away from the bridge and toward the fingerboard.

• Sul tasto — bow over the fingerboard for a softer, flute-like tone.

• Mute (con sordino) — a device that dampens the instrument’s resonance; senza sordino = without mute.

• Attacca — proceed immediately to the next movement without a pause. It appears in symphonic and other multi-movement works; the French equivalent is enchaînez.

• musical directions
  • de capo — De capo is a musical direction meaning “from the head,” telling performers to repeat a previously played section.
• musical expression markings
  • Tragic — The adjective tragic is used for works such as Brahms’s Tragic Overture, Schubert’s Fourth Symphony, and Mahler’s Sixth Symphony. In music, it often signals a dark, dramatic tone rather than a formal genre label.
• Expression marks
  • intimate — In music, intimate is the adjective behind titles such as Sibelius’s Voces intimae and Janáček’s Intimate Letters. It is also used for chamber works whose expressive, personal character makes the title a clue to their emotional tone.
• Musical terms
  • pastoral or pastorale — Pastoral, or pastorale, describes art or music that evokes rustic, idealized country life. In music it appears in works from Handel and Haydn to Beethoven’s Symphony No. 6 and the Piano Sonata No. 15, whose nickname is the Moonlight’s companion in the opus catalog.
• performance directions
  • offstage — Offstage describes an unusual performance direction in which musicians or singers are placed away from the visible stage, often to suggest distance or celestial space. It appears in works such as Holst’s The Planets and other pieces calling for hidden brass or chorus.

Musical Systems and Advanced Theory

Compare musical systems and then study advanced compositional methods.

Musical Systems in Comparative Perspective

The notation, tonal harmony, and formal vocabulary above primarily describe Western concert traditions. Comparative listening also requires concepts developed within other musical practices.

• Rāga and tāla — fundamental to both Hindustani and Carnatic classical music. A rāga organizes melodic material and its expressive character; a tāla organizes time through a recurring rhythmic cycle. Listen to how a performance develops a rāga through elaboration and improvisation, and identify the returning points of its rhythmic cycle.
  • raga — A raga is a melodic framework or modal system in Indian classical music, especially in the Hindustani and Carnatic traditions. It is defined by characteristic note patterns and rules for melodic motion rather than a fixed composition, and is often associated with particular moods, seasons, or times of day. In South Indian classical music, the related term ragam is used for the same kind of framework, typically built from five, six, or seven swaras. The name is commonly glossed as meaning “color” or “passion.”

• Maqām and taqsīm — a maqām is a melodic framework involving characteristic pitches, intervals, and melodic movement. Taqsīm is an improvised exploration, often by a solo instrumentalist. Regional practices differ: Iraqi maqam also names a particular vocal and instrumental tradition, while Central Asian Shashmaqam organizes repertoire into suites. These terms should be learned with performances from the relevant tradition.

• Gamelan — Indonesian ensemble music, especially associated with Java and Bali, and the instruments used to perform it. Ensembles commonly combine gongs, keyed percussion, drums, and other instruments. Listen for simultaneous melodic layers, interlocking parts, and recurring rhythmic patterns. Performance, tuning, instrument making, ceremony, and theater are connected parts of the tradition.⁴ A gamelan is an Indonesian ensemble built around tuned percussion, especially gongs and metallophones. These orchestras are especially associated with Java and nearby traditions. It is often associated with slendro and pelog tuning, shadow-puppet accompaniment, and the shimmering colotomic structure that organizes the music.
  • Gamelan instruments
    • Bonang — The bonang is a Javanese ensemble instrument made of rows of small knobbed gongs. It is related to other gamelan gong-chimes such as the kenong and keromong.
• Indian classical music
  • Tala — Tala is the Indian musical concept of time cycle or meter, underlying Carnatic and Hindustani music. It combines the pace of a performance with the pattern of stressed and unstressed beats. Common examples include adi tala, and it is often associated with konnakol syllables and percussion accompaniment by mridangam or tabla.
• Modes and modal systems
  • maqāmāt — Maqāmāt are the melodic modes of Arabic and related Middle Eastern music, broadly comparable to Western modes. The system’s older theory was superseded in Qajar-era Persian music by the dastgāh system.
• Musical function
  • timekeeping — Timekeeping is the function of measuring and marking time, whether by a sundial, a clepsydra, or astronomical devices like those in medieval towers. In gamelan, paired gongs and metallophones can serve this same beat-marking role.
• tuning systems
  • slendro — Slendro is a five-note tuning system from gamelan music, often described as a nearly equidistant pentatonic scale within the octave. It is contrasted with the related seven-note pelog system.

20th-Century and Advanced Theory

• Atonality, Rows, and Pitch Organization
  • Atonality — music that avoids a tonal center and the functional harmonic relationships of common-practice tonality; associated with Schoenberg, Berg, and Webern; not the same as random or disorganized pitch usage. It is especially associated with Schoenberg and the Second Viennese School. Early examples include Schoenberg’s Op. 11 piano pieces and his Second String Quartet, and twelve-tone music is sometimes treated as a related development.
    • pantonality — Pantonality is Schoenberg’s preferred term for music built from all twelve tones rather than the traditional language of atonality. The word means “all of the tones” and reflects his reluctance to frame his style as simply lacking tonality.

  • Twelve-tone technique (dodecaphony / serialism) — a compositional method developed by Arnold Schoenberg in which all 12 pitch classes of the chromatic scale are arranged into a fixed ordered sequence called the tone row (or series); no pitch class may be repeated until all 12 have appeared; the row governs melodic and harmonic content.

  • Tone row (twelve-tone row / series) — the ordered arrangement of all 12 pitch classes used as the basis of a twelve-tone composition.

  • Prime (P) — the original form of the tone row; labeled P-0 through P-11 by starting pitch class.

  • Inversion (I) — the tone row with all intervals inverted (reflected about the starting pitch); an ascending minor third becomes a descending minor third, etc.

  • Retrograde (R) — the tone row read backwards.

  • Retrograde-inversion (RI) — the inversion of the row read backwards; the fourth and final canonical transformation.

  • Pitch-class set theory — a post-tonal analytical framework developed by Allen Forte that classifies groups of pitch classes (regardless of octave or order) by their intervallic content; sets are identified by prime form and Forte number (e.g., [0,1,4,6] = Forte 4-Z15); tools include the interval vector and set-class equivalence.

  • Polytonality — the simultaneous use of two or more different keys; Stravinsky’s Petrushka chord (C major and F# major superimposed) is the canonical example.

  • Bitonality — a specific form of polytonality using exactly two keys simultaneously.

  • Serialism (total serialism) — an extension of twelve-tone technique in which serial organization is applied not only to pitch but also to rhythm, dynamics, articulation, and register; associated with Messiaen, Boulez, and Stockhausen in the post-WWII period.
• Sound, Indeterminacy, and Repetition

  • Sprechstimme (Sprechgesang) — a vocal technique midway between speech and song, indicated by an x notehead; the singer approximates the written pitch but immediately slides away; used by Schoenberg in Pierrot Lunaire.

  • Prepared piano — a piano whose timbre is altered by placing objects (screws, bolts, rubber, felt) between the strings; invented by John Cage; produces percussive, metallic, or muffled timbres. John Cage made the technique famous in Sonatas and Interludes, and it also appears in works by Arvo Pärt and other 20th-century composers; Cage used a prepared piano in Bacchanale.

  • Aleatoric (chance) music — music in which some element of composition or performance is determined by chance procedures; John Cage’s use of the I Ching (Music of Changes) is a central example; distinct from improvisation in that the performer may follow random instructions rather than personal choice.

  • Minimalism — a style using simple, repetitive musical materials that evolve through gradual processes; associated with Steve Reich (phasing), Philip Glass (arpeggiated patterns), and Terry Riley; the technique of phase shifting (two identical loops played at slightly different tempos) is a hallmark of Reich. It is a late-20th-century style built from short repeated patterns and a steady pulse, with landmark works including Terry Riley’s In C and Reich’s Music for 18 Musicians; John Adams is also associated with the style.

    • phasing — Phasing is a minimalist compositional technique in which identical musical material is repeated in slightly different tempi so the parts drift out of sync before realigning. Steve Reich made it famous in works like It’s Gonna Rain and Clapping Music, and it also appears in William Duckworth’s Time Curve Preludes.

Composition and Technique

• medieval compositional techniques
  • Isorhythm — Isorhythm is a medieval compositional technique that repeats a rhythmic pattern, or talea, against a recurring melodic pattern, or color. It is especially associated with the motets of Philippe de Vitry and works like Machaut’s Messe de Nostre Dame.
• Performance practice
  • improvisation
    • musical improvisation — Musical improvisation is the spontaneous creation of melody or variation during performance. It is especially important in styles such as jazz and Indian classical music, where performers work within the rules of a raga or other framework rather than reading fixed notes.
      • improvised — An improvised musical is created with major elements made up on the spot rather than fully scripted in advance. The term also fits solo cadenzas and other performance practices where players generate material spontaneously.
  • sight-reading — Sight-reading is the skill of performing music from notation without prior practice. Guido of Arezzo’s hand and solfege were designed to help musicians learn it.

Related Concepts and Applications

• compositional techniques

  • micropolyphony — Micropolyphony is a dense style of canonic writing in which many close entries blur into a single shifting texture rather than distinct lines. It is closely associated with György Ligeti, who used it in works such as Atmosphères and Lontano, and whose textures were compared to a woven cobweb.

  • Sacred minimalism
    • Tintinnabuli — Tintinnabuli is Arvo Pärt’s bell-like compositional technique, in which one voice sustains a tonic and another moves around it. It first appeared in a short, symmetrical piano piece such as Für Alina.
  • serialism — Serialism is a compositional method that organizes musical material through ordered series, most famously the twelve-tone row. It is associated with Schoenberg’s technique and with later composers such as Boulez, Stockhausen, and Stravinsky.
    • twelve-tone system — Arnold Schoenberg’s method of composing with a tone row in which all twelve chromatic pitch classes are given equal importance, typically by ordering the pitches before any are repeated. It is a hallmark of early serialism, associated with atonal music that avoids a central tonal center, and appears in works such as Alban Berg’s Lulu and in later discussions by figures like Adorno.
  • twelve-tone technique — The twelve-tone technique is Schoenberg’s method of organizing music by a fixed row of all twelve chromatic pitches. It became a foundation of serialism and was especially important to the Second Viennese School and later twentieth-century atonal composition.
    • twelve-tone row — An ordered series of the twelve pitch classes, or twelve chromatic pitches, used as the basis of twelve-tone and serial composition. The concept is especially associated with Schoenberg’s twelve-note method, and Second Viennese School composers such as Schoenberg, Berg, and Webern built works from rows and from transformations such as inversion, retrograde, and retrograde inversion.

  • aleatoric composition — Aleatoric composition, or chance music, leaves some element of a piece to randomness or performer choice. It is associated with John Cage, Pierre Boulez, Karlheinz Stockhausen, and Witold Lutosławski.

  • liquidation — Liquidation is the Schoenberg-derived technique in which a theme is reduced to its essential motives after continuation and fragmentation have done their work. In classical-form analysis, it describes the stripping away of distinctive melodic material toward a simpler kernel.
• extended techniques
  • multiphonics — In music, multiphonics is the extended technique that lets a single instrument produce more than one pitch at once. It appears in avant-garde works such as Berio’s Sequenza I for flute.
• cryptograms
  • F-A-E — A musical cryptogram built from the notes F, A, and E, associated with Joseph Joachim’s motto “free but lonely.” It titles a collaborative sonata and appears in works by Schumann and Brahms as a composerly signature. Clara Schumann dedicated her Three Romances to Joachim, and Brahms used the motto as a cryptogram in chamber and symphonic music.
• thematic transformation
  • inversion — In music theory, inversion is the transformation that flips intervals or a tone row upside down. The term also describes chord inversion and related contrapuntal techniques in which voices or harmonies are reversed in some way.

• retrograde — Retrograde means moving or facing in the opposite direction, whether in neuronal transport, planetary motion, or music. In music theory, it names the technique of reversing a line’s order or rhythms.

• Electronic music
  • magnetic tape loops — Magnetic tape loops were a key early medium for experimental and minimalist music, especially in musique concrète and in Steve Reich’s phasing pieces. William Basinski’s Disintegration Loops turned deteriorating tape into an ambient memorial to 9/11.
• analysis methods
  • Schenkerian analysis — Schenkerian analysis is a method of music analysis that explains a work through hierarchical layers of background, middleground, and foreground. It centers on the Ursatz and Urlinie, showing how a tonal work is elaborated by prolongation from a deeper fundamental structure.
• sampling
  • sampling music — Sampling is the musical technique of reusing recorded sounds, a core method in hip-hop production and in plunderphonics. Albums such as Endtroducing… and Madvillainy are closely associated with this practice.
• Tape music

  • magnetic tape recording — Magnetic tape recording is the medium behind early minimalist works by Steve Reich and related process music experiments. John Cage and Terry Riley’s tape-based techniques helped shape pieces like It’s Gonna Rain and In C, which were built from repetition, looping, and phase-like effects.

  • tape — Tape is a medium Steve Reich uses in works like It’s Gonna Rain and other early minimalist compositions built from recordings and repetition. The word can also refer to adhesive film used in fabrication, as in mounting wafers before singulation or peeling graphene from graphite. The clues hinge on the material rather than a single specialized field.

Recording and Musical Scholarship

Connect sound technologies and scholarship to musical practice.

Sound and Audio Technology

• Acoustics

  • beats — Beats are the periodic variations in loudness produced when two close frequencies interfere. The same word also names the Beat Generation, the spontaneous postwar literary movement associated with Ginsberg and William S. Burroughs.

  • harmonics — Harmonics are frequencies or oscillations that occur at integer multiples of a fundamental frequency. The word also describes a form of simple harmonic motion in classical mechanics and acoustics, where overtones and wave components combine into sinusoidal patterns. Clues may refer to string instruments, overblowing, or nonlinear optical harmonics.

    • overtones — Overtones are the higher-frequency harmonics above a fundamental note, with the first overtone matching the second harmonic. They help determine an instrument’s timbre and also appear as extra peaks in infrared spectroscopy.
• Audio effects
  • Delay — Delay is an audio effect that mixes a sound with a slightly later copy of itself, creating echoes. It underlies tape echo units such as the Echoplex and influences effects like chorus, flanging, and reverb.
• Audio reproduction
  • stereo — Stereo refers to two-channel sound reproduction, usually contrasted with mono. It is the standard term for audio playback that places sound across a left-right field.
• Auditory illusions
  • Shepard tone — A Shepard tone is an auditory illusion that seems to rise or fall endlessly without changing pitch range. Composers use it for sustained tension and vertigo effects, including the Shepard-Risset glissando.
• Music technology standards
  • Musical Instrument Digital Interface — Musical Instrument Digital Interface is a standard for transmitting musical performance data between electronic instruments and computers rather than raw audio. Its compact file format was widely used for synthesized music and early video game soundtracks.
• Sound recording
  • stereophonic sound — Stereophonic sound is recording and playback using two channels rather than mono. It was advanced by Alan Blumlein and later adopted by recordings such as the Beatles’ White Album.
• synthesis
  • envelopes — Emily Dickinson’s late poems were famously preserved on envelopes, and Gorgeous Nothings presents transcriptions of those fragments. An envelope generator in synthesizers shapes a sound’s attack, decay, sustain, and release.
• Synthesizer waveforms
  • sawtooth wave — A sawtooth wave is a basic synthesizer waveform known for its bright, harmonically rich sound. It is closely associated with the Moog and with detuned stacked versions often called supersaws.
• waveforms
  • square wave — A square wave is a periodic signal that jumps between two levels with abrupt transitions, producing a blocky waveform. It is common in electronics as a clock signal and is closely related to the sign function of a sine wave.

Music Scholarship and Treatises

• Charles Rosen — Charles Rosen was an American pianist and musicologist who wrote influential studies of sonata form and classical style. His best-known book, The Classical Style, treats Haydn, Mozart, and Beethoven as central figures in the development of eighteenth-century music.

• Folk song indexes
  • Roud Folk Song Index — The Roud Folk Song Index is a catalog of English-language folk songs and ballads compiled by Steve Roud. It assigns identifying numbers to songs such as “Barbara Allen,” “Blackjack Davy,” and “On Ilkla Moor Baht ‘at.”

• George Grove — George Grove was a Victorian music critic and editor best known for the Dictionary of Music and Musicians. He also wrote on Beethoven and helped promote concert life at the Crystal Palace and Sydenham.

• Hector Berlioz
  • Treatise on Instrumentation — Hector Berlioz’s Treatise on Instrumentation is a foundational 19th-century guide to orchestral writing. It discusses timbre, orchestral color, and the proper use of instruments such as the timpani and viola, and it remained influential despite later textbooks by Piston and Adler.
• Johann Joseph Fux
  • Gradus ad Parnassum — Gradus ad Parnassum is the Latin title shared by Johann Joseph Fux’s influential counterpoint treatise and by later pedagogical works such as Clementi’s exercises. Fux presents the book as a dialogue and uses it to teach species counterpoint, which made the title a standard reference point in music theory.
• Music historians and critics
  • Ted Gioia — Ted Gioia is a music historian and critic known for books such as The History of Jazz and The Birth and Death of the Cool. His writing ranges from jazz history to broader cultural criticism, including work on blues and the idea of cool.
• music theorists

  • Heinrich Schenker — Heinrich Schenker was an Austrian-German music theorist whose analysis reduces tonal works to underlying levels of structure culminating in the Ursatz. His ideas form the basis of Schenkerian analysis and remain influential and controversial in music theory.

  • Hugo Riemann — Hugo Riemann was a major music theorist who analyzed tonality through a major-minor dualism and described major triads as inverted duals of minor triads. His functional theory also restricted harmony to tonic, subdominant, and dominant relations, and his ideas are often invoked in analyses of the Tristan chord.

  • Galilei — Galilei is the surname shared by the astronomer Galileo and the early Baroque musicians Vincenzo and Michelagnolo Galilei. Quizbowl clues often point to Vincenzo’s work in music theory and monody, along with the broader Galilei family connection to the Florentine Camerata.

• Musicologists
  • Erich Moritz von Hornbostel — Erich Moritz von Hornbostel was an Austrian comparative musicologist who worked with Curt Sachs on the Hornbostel-Sachs system of instrument classification. That taxonomy organizes instruments into groups such as chordophones and membranophones.
• musicology — Musicology is the academic study of music, including its history, theory, and interpretation. Related subfields such as ethnomusicology and new musicology broaden the discipline by bringing in cultural, philosophical, and critical perspectives.

Composers, Examples, and Shared Musical Titles

Use repertoire examples and composer references to reinforce theory after learning the relevant forms and techniques.

• Joe Hisaishi — Joe Hisaishi, also known as Mamoru Fujisawa, is a Japanese composer especially associated with the films of Studio Ghibli. He also scored the Ni no Kuni franchise and other fantasy projects, with memorable themes such as “Merry-Go-Round of Life” and “One Summer’s Day.”

• Béla Bartók
  • Mikrokosmos — Mikrokosmos is Béla Bartók’s six-volume set of 153 progressively harder piano pieces. It is a pedagogical collection that includes pieces such as “From the Diary of a Fly,” “Bulgarian Rhythm” studies, and “Dragon’s Dance.”
• Thomas Arne
  • Alfred
    • Rule, Britannia! — “Rule, Britannia!” is Thomas Arne’s patriotic song from Alfred, with lyrics that insist Britons never will be slaves. It appears in Henry Wood’s Fantasia on British Sea Songs and is often heard at the Last Night of the Proms and on Remembrance Day.
• Richard Wagner
  • Tristan und Isolde
    • Tristan chord — The Tristan chord is Wagner’s famously unresolved dissonant sonority associated with Tristan und Isolde. It is commonly identified by the pitches F, B, D-sharp, and G-sharp and is often cited as a step toward late Romantic chromaticism and atonality.
• Frederic Francois Chopin
  • Polonaises
    • Frederic Francois Chopin’s polonaises — Chopin’s polonaises are stylized Polish dances in triple meter, including famous examples labeled “Military,” “Heroic,” and “Tragic.” They often use a stately rhythmic pattern and became emblematic of Polish national sentiment during his exile in Paris.
• Verb titles
  • speak — Speak is a verb that titles several jazz pieces and albums, including Wayne Shorter’s Speak No Evil and Herbie Hancock’s Speak Like a Child. It is also the action Donatello’s lifelike Habakkuk statue was said to need.

• wrong notes — Wrong notes are the intentionally or supposedly incorrect pitches that recur in musical-clue questions about dissonance and wit. They are associated with Gershwin’s Rhapsody in Blue, Ives’s comic tolerance for them, and Chopin’s “Wrong Note” Étude.

• Times of day
  • morning — Morning is the early time of day depicted in Grieg’s “Morning Mood,” as well as other works such as Beethoven-style aubades and poems by Prévert. Music clues may refer to sunrise, dawn, or daybreak, often with oboe or flute openings.
• Mysticism in music
  • mystic — Mystic is the descriptive word attached to works such as Holst’s Neptune, the Mystic and Scriabin’s mystic chord. It also points to the broader fascination with atmosphere and the occult in early twentieth-century music.