Five parallel horizontal lines and the four spaces between them, on which notes are placed to indicate pitch. Higher positions on the staff sound higher in pitch.

A clef whose curl encircles the second line of the staff, fixing it as G above middle C. Used for higher voices and instruments — violin, flute, right-hand piano.

A clef whose two dots straddle the fourth line of the staff, fixing it as F below middle C. Used for lower voices and instruments — cello, bassoon, left-hand piano.

A movable clef whose center fixes middle C (C4). Centered on the third line, it becomes the alto clef, used today almost exclusively for the viola.

Two staves joined by a brace — a treble staff above and a bass staff below — used for keyboard music and choral scores. Middle C sits on a ledger line between them.

A short line drawn above or below the staff to extend it, allowing notes that fall outside its five-line range. Middle C in treble clef sits on the first ledger line below the staff.

A vertical line through the staff that divides music into measures (bars). A double bar line marks the end of a section; a final bar line closes the piece.

The space between two bar lines. Each measure contains a fixed number of beats determined by the time signature — e.g. four quarter notes in 4/4.

An open notehead with no stem. Lasts four beats in 4/4 time — the longest note value in common use.

An open notehead with a stem. Two beats in 4/4 — half the value of a whole note.

A filled notehead with a stem. One beat in 4/4 — the most common rhythmic unit and the usual reference for tempo markings such as ♩ = 120.

A filled notehead with a stem and a single flag. Half a beat in 4/4. Adjacent eighth notes are usually beamed together rather than flagged.

A filled notehead with a stem and two flags. A quarter of a beat in 4/4.

A small dot to the right of a notehead lengthens the note by half its value. A dotted half note lasts three beats; a dotted quarter, one and a half.

A group of notes played in the time normally occupied by a different number. A triplet fits three notes into the time of two; a duplet fits two into the space of three.

A curved line connecting two noteheads of the same pitch, joining them into a single sustained sound whose duration is their sum.

A symbol indicating silence. Each note value has a corresponding rest of the same duration — whole rest, half rest, quarter rest, and so on.

How high or low a sound is, determined by the frequency of its vibration. In Western music we name twelve pitch classes (A through G with sharps and flats), repeated across octaves.

The interval between a note and another with exactly twice (or half) its frequency. They share a name and sound nearly identical — the most consonant interval in tonal music.

An accidental that raises a note by one semitone (half step). F♯ sounds one fret higher than F on a guitar.

An accidental that lowers a note by one semitone (half step). B♭ is the note one half step below B.

An accidental that cancels a previous sharp or flat, restoring the unaltered pitch. Used to override a key signature for a single note within a measure.

A double sharp raises a note by two semitones (a whole step); a double flat lowers it by two. Common in remote keys and chromatic harmony.

Two notes that share the same pitch but are spelled differently — for example F♯ and G♭. They sound identical on a piano but function differently in harmonic analysis.

The smallest interval in standard Western music — the distance between two adjacent keys on a piano or two adjacent frets on a guitar.

Two semitones — the distance from C to D, for example. The major scale is built mostly from whole tones with two semitones in fixed positions.

The distance between two pitches. Named by quality (perfect, major, minor, augmented, diminished) and number (second, third, fourth, etc.).

The most dissonant interval in tonal music — the leading tone resolving up to the tonic, or the iconic two-note shark theme from Jaws.

A whole step. The first two notes of Happy Birthday or Frère Jacques.

The defining interval of minor harmony. Heard at the start of Greensleeves and the Star-Spangled Banner (rising), or Hey Jude (falling).

The bright, stable interval at the heart of a major chord. Heard at the start of When the Saints Go Marching In.

A strong, open interval. The opening of Here Comes the Bride or Auld Lang Syne. Considered consonant melodically and dissonant when stacked above the bass.

Three whole tones — the augmented fourth or diminished fifth. Tense and unstable; once nicknamed diabolus in musica. The first two notes of Maria from West Side Story.

After the octave, the most consonant interval. The opening of Twinkle, Twinkle and the Star Wars main theme. The framework of every major and minor triad.

A wistful, longing interval. The opening of The Entertainer (rising) or Love Story theme.

A warm, spacious interval. The opening of My Bonnie Lies Over the Ocean or NBC's three-tone chime (G–E–C uses M6 + m3).

A restless interval that wants to resolve. The defining color of a dominant 7th chord. Opening of the Star Trek (TOS) fanfare.

A sharply dissonant leap, but luminous when held in a chord. One semitone shy of the octave; the colour of major-jazz harmony.

Two notes a 2:1 frequency ratio apart — the same pitch class, separated by twelve semitones. The cleanest blend of any interval.

Flipping an interval so the lower note becomes the upper. Major and minor exchange (M3 ↔ m6); perfect intervals stay perfect (P4 ↔ P5); the two numbers always sum to nine.

An ordered sequence of pitches, usually spanning an octave, that defines the tonal palette of a piece. Different scales — major, minor, modal, pentatonic — each have a distinctive flavor.

The familiar do-re-mi-fa-sol-la-ti-do. Built from the pattern whole-whole-half-whole-whole-whole-half. Bright, stable, and the basis of most Western tonal music.

• C major: C–D–E–F–G–A–B–C

Pattern whole-half-whole-whole-half-whole-whole. The default minor scale — darker, more melancholy than major. Identical to the Aeolian mode.

• A minor: A–B–C–D–E–F–G–A

The natural minor with its seventh degree raised, creating a leading tone that pulls strongly toward the tonic. The augmented second between scale degrees 6 and 7 gives it an exotic, Middle-Eastern color.

• A harmonic minor: A–B–C–D–E–F–G♯–A

Ascending: raised 6th and 7th degrees (whole-half-whole-whole-whole-whole-half). Descending: same as natural minor. Smoother to sing than harmonic minor while retaining a leading tone going up.

• A melodic minor (asc): A–B–C–D–E–F♯–G♯–A

A five-note scale with no semitones — simply the major scale with its 4th and 7th removed. Open and singable. Heard in folk music worldwide and in countless rock solos.

• C: C–D–E–G–A–C

A five-note scale of natural minor with its 2nd and 6th removed. The backbone of blues, rock, and pop guitar improvisation.

• A: A–C–D–E–G–A

All twelve semitones in order. Has no tonal center on its own; used for runs, decoration, and atonal music.

Six notes per octave, all separated by whole tones. Symmetrical and tonally ambiguous — Debussy and Liszt used it for dreamlike, suspended atmospheres.

Minor pentatonic plus a chromatic passing tone (♭5) — the blue note. Six notes that capture the bend and grit of blues phrasing.

Seven scales obtained by starting the major scale from each of its degrees. Ionian = major, Aeolian = natural minor, the rest produce distinctive flavors heard in folk, jazz, and modal classical music.

Minor scale with a raised 6th. The 2nd mode of major. Cool and slightly hopeful — heard in Scarborough Fair and So What by Miles Davis.

Minor scale with a lowered 2nd. The 3rd mode of major. Dark, Spanish flavor. Common in flamenco.

Major scale with a raised 4th. The 4th mode of major. Floating and luminous — used by Debussy and modern film composers for wonder and discovery.

Major scale with a lowered 7th. The 5th mode of major. Bluesy, rooted — heard in countless rock songs (Norwegian Wood, Sweet Home Alabama).

Minor scale with lowered 2nd and 5th. The 7th mode of major. Unstable — its tonic chord is a diminished triad. Rarely a tonic in tonal music.

Three or more pitches sounding at once. Most Western harmony is built from chords stacked in thirds.

A three-note chord made of two stacked thirds. Four qualities: major, minor, diminished, and augmented — distinguished by which thirds (major or minor) are stacked.

Root, major 3rd, perfect 5th. Bright, stable, the foundational chord of Western tonal music.

• C: C–E–G

Root, minor 3rd, perfect 5th. Darker, somber counterpart to the major triad.

• C minor: C–E♭–G

Root, minor 3rd, diminished 5th. Tense, unstable — built on the leading tone (vii°) of a major key.

• C diminished: C–E♭–G♭

Root, major 3rd, augmented 5th. Symmetrical and ambiguous — every inversion is itself another augmented triad.

• C augmented: C–E–G♯

A triad with a fourth note added a 7th above the root. The most common are major 7, dominant 7, minor 7, half-diminished, and fully diminished.

A major triad with a minor 7th. The defining sound of tonal cadences and of the blues — wants to resolve to the tonic.

• G7: G–B–D–F

A major triad with a major 7th. Lush, jazzy color — at home in bossa nova and ballads.

• Cmaj7: C–E–G–B

A minor triad with a minor 7th. Mellow, jazzy, neither dark nor bright. Built on degrees ii, iii, and vi of a major key.

• Dm7: D–F–A–C

Four notes stacked in minor 3rds — a fully symmetrical chord. Maximally tense; useful for modulation because it spells out four different keys at once.

A diminished triad with a minor 7th. Built on the 7th degree of a minor key (ii ø7 in minor). Heavier than a minor 7, lighter than a fully diminished chord.

A chord whose root is not the lowest note. First inversion places the 3rd in the bass, second inversion the 5th, and so on. Inversions keep the chord's identity but smooth voice leading.

The notes of a chord played one at a time rather than together — Italian for harp-like.

A chord progression that ends a phrase. Authentic (V–I) is the strongest; plagal (IV–I) is the amen cadence; half cadence ends on V; deceptive (V–vi) feints toward resolution and lands somewhere else.

The home note and chord of a key — the gravitational center toward which other harmonies pull and resolve.

The chord built on the fifth degree of the scale. With its leading tone driving up to the tonic, it creates the strongest pull of any harmony in tonal music.

The chord built on the fourth degree. A gentler departure from the tonic than the dominant — central to the plagal cadence and the blues progression.

A way of labeling chords by their scale degree rather than letter name: I, ii, iii, IV, V, vi, vii°. Uppercase = major, lowercase = minor, ° = diminished. Lets a progression be discussed in any key at once.

A diagram arranging the twelve keys by ascending perfect 5ths (C → G → D → A …). Adjacent keys differ by a single accidental. A practical map for modulation, key signatures, and chord progressions.

A group of sharps or flats placed at the start of every staff, indicating the key. A sharp (or flat) in the signature applies to that note in every octave throughout the piece, until cancelled by a natural.

The tonal center of a piece — the scale and tonic chord around which the music gravitates. C major and A minor share a key signature but differ in their tonic and feel.

Moving from one key to another within a piece. Common destinations are the dominant, the relative minor, or a closely related key reached by a pivot chord.

Two stacked numbers at the start of a piece. The top number says how many beats are in each measure; the bottom says which note value gets one beat (4 = quarter, 8 = eighth).

Four quarter-note beats per measure — by far the most common meter in Western music. The symbol 𝄴 (a broken C) is sometimes used in place of 4/4.

Two half-note beats per measure. Felt as fast 2 rather than slow 4 — common in marches and Renaissance music.

A meter where each beat divides into three rather than two. 6/8 is felt as two beats of three eighth notes; 9/8 as three beats; 12/8 as four. Common in jigs, lullabies, and shuffle feels.

One or more notes that begin a phrase before the first downbeat. The piece begins on an incomplete measure that resolves into beat 1.

Accents placed on weak beats or off-beats, against the natural pulse. The driving force of jazz, ragtime, funk, and most popular music.

Two or more independent rhythms layered at once — for example, three notes in one voice against two in another (a 3:2 hemiola).

Solemn and very slow. Heavy, ceremonial — the slowest of the standard markings.

Broad. Slow and stately, with room for sustained line.

Slow. Similar to largo but slightly less stately — sometimes used interchangeably.

At ease. A slow tempo, but lighter and more lyrical than largo. Typical of slow movements in classical sonatas.

Walking pace. Moderate and flowing — the default tempo for many lyrical movements.

At a moderate speed. Faster than andante, slower than allegro.

Fast and cheerful. The most common Italian tempo word and the typical first-movement tempo of a classical symphony.

Lively. Faster than allegro, with bright energy.

Very fast. Common for finales and virtuosic showpieces.

As fast as possible — the upper limit of human performance.

Gradually slowing down. Often applied at the end of a phrase or piece.

Becoming gradually slower — often used interchangeably with ritardando, though some treat it as broader and more deliberate.

Gradually speeding up. The opposite of ritardando.

Stolen time. Slight, expressive bending of tempo — push and pull within a phrase that nonetheless balances out overall. A signature of Romantic piano playing.

Return to the original speed. Cancels a previous ritardando, accelerando, or other modifier.

Return to the very first tempo of the piece, after one or more changes.

Hold the note (or rest) longer than its written value, at the performer's discretion. Often used to extend a final chord or punctuate a phrase.

A precise tempo indication: a note value followed by an equals sign and a beats-per-minute number. Often given alongside an Italian word.

Very soft. A whisper of sound, often barely audible.

Soft. The instrument's name comes from the original fortepiano, which could play both soft (piano) and loud (forte).

Moderately soft — half soft.

Moderately loud. The default dynamic if none is given.

Loud. Strong and full.

Very loud — the upper end of the standard range. Triple- and quadruple-forte (fff, ffff) appear in late Romantic and modern scores.

A sudden, strong accent on a single note or chord — louder than its surroundings.

Loud, then immediately soft. A sudden subito drop from forte to piano on the same note.

Gradually getting louder. Notated with the word cresc. or an opening hairpin (a long less-than sign).

Gradually getting softer. Often called diminuendo (dim.).

Italian for diminishing — used interchangeably with decrescendo, though some composers reserve dim. for a fade in volume and intensity together.

Suddenly. Combined with a dynamic — subito p, subito f — to demand an immediate change with no transition.

Dying away — fading in volume and tempo together. Often used at the end of a piece.

Smoothly connected. Each note flows into the next with no audible gap. Often indicated by a slur (a curved line over the notes).

Detached. Each note is short and clearly separated from the next, marked with a small dot above or below the notehead.

Very staccato — even shorter and more clipped. Marked with a small wedge.

Hold the note for its full written value, with a slight emphasis. Marked with a short horizontal line above or below the notehead.

Marked, emphatic — stronger than an accent. Each note is given a sharp, full attack. Notated with a small caret.

An emphasis on a single note — louder than its surroundings, usually with a sharper attack. The standard accent is a sideways wedge written over or under the notehead.

A curved line connecting two or more notes of different pitches, indicating they are to be played legato. On bowed strings or wind instruments, a slur is one bow-stroke or one breath.

Rapid alternation between the written note and the note a step above. Used as ornament; the rate is determined by the performer.

A quick alternation: written note, neighbor note, written note again. Upper mordent goes up; inverted mordent (lower) goes down.

An ornament weaving around a written pitch: upper neighbor, written note, lower neighbor, written note. A graceful curl of decoration.

A small note printed before the main note, played quickly so it ornaments rather than disturbs the rhythm. An acciaccatura is crushed in instantly; an appoggiatura leans on the main note and takes some of its time.

Rapid repetition of a single note (or rapid alternation between two notes a third or more apart). Notated by slashes through the stem. On bowed strings, a fast back-and-forth bow.

A small, regular fluctuation in pitch around a sustained note, adding warmth and life. On strings, made by rocking the finger on the fingerboard.

A continuous, audible slide between two pitches. Common in vocal music and on bowed strings.

A rapid sweep through every note between two pitches. On a piano it is a finger across the keys; on a harp, a glide across the strings.

Plucked, on a bowed string instrument. Cancelled by the marking arco — return to the bow.

With the bow. Cancels a previous pizzicato and restores normal bowed playing.

With the mute. A small device clipped onto the bridge of a string instrument or inserted into the bell of a brass instrument to soften the tone. Cancelled by senza sordino.

The shortest recognizable musical idea — a few notes whose rhythm and contour can be repeated, transposed, or transformed throughout a piece. The four-note tat-tat-tat-TAH that opens Beethoven's Fifth is the most famous example.

A complete melodic idea, longer than a motif — typically a full phrase or period — that returns and develops across a piece.

A musical thought with a clear beginning and end, usually four to eight bars long, typically closing with a cadence. The musical equivalent of a sentence.

Two complementary phrases joined together — an antecedent that asks a question (often ending on the dominant) and a consequent that answers it (resolving to the tonic).

The main melodic idea of a fugue, stated alone at the start by one voice and then imitated in turn by the others.

A second melody designed to accompany the subject of a fugue every time it returns. Distinct enough to be heard as its own line, but compatible with the subject in counterpoint.

An opening section that prepares the main material. Often slower or harmonically unstable, designed to make the entrance of the main theme feel arrived at.

A passage that connects two sections, often modulating from one key area to another. In popular song, the contrasting middle section between repeats of the chorus.

A concluding section appended after the main form has run its course. Italian for tail. Brings the piece to a definitive close, sometimes by recalling and resolving earlier material.

A short coda — often closing a section rather than the whole piece. Common at the end of a sonata-form exposition.

A short rhythmic or melodic pattern repeated persistently throughout a passage. Italian for obstinate. The bass line of Pachelbel's Canon and Ravel's Boléro are classic examples.

A recurring musical idea associated with a person, place, or concept — most famously in Wagner's operas and inherited by film scores from Star Wars to Lord of the Rings.

Two contrasting sections, each typically repeated. Common in Baroque dance movements — the first half moves from tonic to dominant, the second returns to tonic.

Three sections in which the third returns to the first, often with embellishment, after a contrasting middle. The basic shape of the minuet, the da capo aria, and many slow movements.

A recurring main theme (A) alternating with contrasting episodes (B, C, …). Bright and circular — common in classical-era finales.

The three-part architecture that dominates first movements of classical symphonies, sonatas, and string quartets. An exposition presents two contrasting themes in different keys; a development fragments and modulates them; a recapitulation restates both themes in the home key.

The first section of sonata form. Establishes the home key with a first theme, modulates to a contrasting key (usually the dominant or relative major), and presents a second theme there.

The middle section of sonata form. Fragments, transposes, and combines the exposition's material through unstable, modulating harmony — building tension before the return home.

The final section of sonata form. Restates the exposition's themes — but this time keeps the second theme in the tonic key, resolving the tonal tension.

A theme is stated, then followed by a series of variations that transform it — by changing rhythm, harmony, register, mode, or texture — while preserving its underlying shape.

A contrapuntal form built on systematic imitation. The subject enters alone and is taken up in turn by each voice while the others continue with new material. Episodes (free passages) alternate with further entries of the subject.

A piece in which one voice presents a melody and other voices follow exactly, after a fixed delay. A round (Row, Row, Row Your Boat) is the simplest kind of canon.

Continuous variations over a repeating bass line in slow triple meter — a Baroque favorite. Distinguished from chaconne mostly by tradition; the bass is the constant.

Continuous variations over a repeating harmonic progression, usually in slow triple meter. Bach's Chaconne in D minor for solo violin is the most celebrated.

A piece (often a song) in which new music continues throughout, without large-scale repeats. Each verse or section gets fresh material — opposite of strophic.

A song form in which every verse uses the same music. The folk-song shape; opposite of through-composed.

The dominant form of popular song since the mid-20th century. Verses tell the story over varied lyrics; choruses return with the song's hook and message; bridges and pre-choruses add variety.

A twelve-measure chord progression — four bars of I, two of IV, two of I, one of V, one of IV, two of I — that became the foundation of blues, R&B, and early rock and roll.

A single unaccompanied melody — one line, even if sung or played by many. Gregorian chant is the canonical example.

A clear melody supported by accompanying chords. The dominant texture of classical, romantic, and popular music — voice over guitar, soprano over orchestra, melody over piano.

Two or more independent melodic lines sounding together. Each line has its own contour and rhythm; they fit by counterpoint. Renaissance vocal music and Baroque fugues are quintessentially polyphonic.

The technique of combining two or more melodic lines so they are independent in shape but harmonious together. From Latin punctus contra punctum — note against note.

Two or more performers playing variations of the same melody at the same time. Common in folk traditions worldwide.

Sweetly. A gentle, lyrical character.

In a singing manner. Phrase the line as a vocalist would — long, lyrical, well-shaped.

Expressively. With feeling — usually meaning a touch more rubato, vibrato, and dynamic shading.

With fire. Intense, passionate, often fast and forceful.

Lightly. With a delicate, airy touch — common for fast passagework.

Playfully, jokingly. Light and humorous in character.

Majestically. Broad, dignified, with a measured weight to each beat.

Mysteriously. Often soft, with restrained color and obscured pulse.

Under the voice. Hushed and intimate, as if confiding in the listener.

All. Everyone plays — used in concertos to mark the return of the full ensemble after a soloist's passage.

Alone. One performer plays a passage; the rest of the ensemble drops out or supports quietly.

On one string. The pianist's left (soft) pedal — shifts the action so hammers strike fewer strings, producing a softer, paler tone. Cancelled by tre corde.

Three strings. Release the soft pedal — restore normal tone after una corda.

At the performer's pleasure. The marked passage may be played freely in tempo and embellishment, or even omitted entirely.

Obligatory. An instrumental line essential enough that it must not be omitted — opposite of ad libitum.

Attack — proceed to the next movement without pause.

From the head. Repeat from the beginning of the piece, usually until a marked end (al fine).

From the sign. Repeat from the segno marking.

End. Marks where the piece concludes after a da capo or dal segno repeat.

The highest standard female voice. Bright, agile — often takes the heroine's role in opera.

The middle female voice — warmer than a soprano, lighter than a contralto. Carmen and Cherubino are mezzo roles.

The lowest standard female voice (often called contralto for true low specialists). Rich and dark in its lower range.

An adult male voice trained to sing in the alto or soprano range, typically using a developed falsetto. Common in early music and Baroque opera.

The highest standard male voice. The tenor takes the leading male role in most operas after the eighteenth century.

The middle male voice — between tenor and bass. The most common male voice in choral writing.

The lowest standard male voice. Authoritative, dark — kings, priests, and villains in operatic tradition.

A vocal register above the singer's modal voice, produced by lighter vibration of the vocal folds. Lets male voices reach soprano-range pitches with a thinner, flute-like tone.

The upper register where vibrations are felt in the head rather than the chest. Distinct from falsetto in technique — more of the vocal fold engages, giving fuller resonance.

The lower register, felt in the chest. Heavier and richer, with the full vocal folds vibrating.

The range in which a singer's voice (or a part) most comfortably sits — distinct from absolute range. A soprano part can have a low tessitura even if it touches a high B once.

The highest of the bowed strings. Four strings tuned in fifths (G3, D4, A4, E5). The most common solo and orchestral string instrument.

Slightly larger than a violin, tuned a fifth lower (C3, G3, D4, A4). Reads alto clef. Warmer, more nasal tone than the violin.

Tuned an octave below the viola (C2, G2, D3, A3). Held between the knees, played seated, with a sound near the human voice in range and warmth.

The lowest standard bowed string. Tuned in fourths (E1, A1, D2, G2). Plays an octave below the cello in orchestral writing — its written pitches sound an octave lower.

An ancient plucked-string instrument. The modern concert harp has 47 strings and seven pedals that raise each pitch class by a semitone, allowing chromatic playing.

Six strings, traditionally tuned E2–A2–D3–G3–B3–E4. Played with fingers or pick. Notated an octave higher than it sounds, in treble clef.

An edge-blown woodwind, originally wooden but today usually silver or other metal. The piccolo is its smaller, octave-higher relative.

A small flute pitched an octave above the standard flute. Bright, piercing — heard cutting through the texture in marches and finales.

A double-reed woodwind with a focused, slightly nasal tone. Tunes the orchestra by sounding A4 because its pitch is the most stable.

An alto oboe in F, with a pear-shaped bell that gives it a darker, plaintive sound. Famous solo: the shepherd's tune in Berlioz's Symphonie fantastique.

A single-reed woodwind with a wide range and broad dynamic palette. The B♭ clarinet is standard; the bass clarinet plays an octave lower.

A double-reed bass woodwind with a long folded body. Comic in its low register (the grandfather in Peter and the Wolf), poignant in its tenor range.

A single-reed woodwind with a brass body, invented by Adolphe Sax in 1846. The four common sizes are soprano, alto, tenor, and baritone. Standard in jazz and concert band; rare in symphony orchestra.

The highest of the standard brass. The B♭ trumpet has three valves. Bright, heroic, often used for fanfares.

A long brass tube coiled into a circle, ending in a flared bell. Mellow and noble; reads in F (sounds a fifth lower than written). Most often called horn in scores.

Brass with a slide instead of valves — the slide changes the tube length to alter pitch. Tenor and bass trombones are orchestral standards.

The lowest, largest standard brass. Wide bell pointed up, three to six valves, deep round tone — the bass voice of the brass section.

A close cousin of the trumpet with a more conical bore. Slightly mellower tone; standard in British brass bands.

A tenor-bass brass with a wide, conical bore — like a small tuba. Singing, lyrical tone; central to concert and brass bands.

Large pitched drums whose tension is adjusted by a foot pedal. Usually played in groups of two to five, tuned to specific notes of the music.

A small drum with metal wires (snares) stretched across its bottom head. The wires rattle when the top is struck, producing a sharp, crisp sound.

The largest orchestral drum. Low, thunderous, usually unpitched — used for emphasis and dramatic punctuation.

Pairs of metal plates clashed together (or a single suspended cymbal struck with a stick or mallet). Splashy and bright, with a long shimmering decay.

Tuned wooden bars laid out like a piano keyboard, struck with mallets. Bright, dry, percussive — sounds an octave higher than written.

A larger, lower xylophone with resonator tubes beneath each bar, producing a warm, mellow sound.

Like a marimba with metal bars and motorized fans inside the resonators that produce a distinctive vibrato. Standard in jazz combos.

Small metal bars struck with hard mallets, producing bright, bell-like tones two octaves above written.

Hammers strike strings when keys are pressed. The most expressive of keyboard instruments — full name fortepiano, since it can play both soft and loud (unlike its harpsichord predecessor).

A keyboard instrument that plucks rather than strikes its strings. Cannot vary loudness by touch. The dominant keyboard from the late Renaissance through the early Classical era.

A wind keyboard. Air is sent through ranks of pipes, each producing one pitch. Multiple keyboards (manuals) and pedals; sustained tones held as long as the keys are depressed.

A small keyboard whose hammers strike metal plates over wooden resonators, producing a delicate, bell-like sound. Tchaikovsky's Dance of the Sugar Plum Fairy is its most famous showcase.

From the codification of plainchant through early polyphony. Notation gradually develops from neumes to staff lines. Composers: Hildegard of Bingen, Léonin, Pérotin, Machaut.

Sacred and secular polyphony reach a refined balance. The flowering of choral music — masses, motets, madrigals. Composers: Josquin des Prez, Palestrina, Byrd, Lassus.

Tonal harmony established. Continuo bass, opera, oratorio, fugue, suite, concerto. Composers: Monteverdi, Purcell, Vivaldi, Handel, J. S. Bach.

Sonata form, symphony, string quartet, public concerts. Lighter textures, balanced phrases, clarity of form. Composers: Haydn, Mozart, early Beethoven.

Expanded forms, larger orchestras, chromatic harmony, programmatic ideas. Composers: Schubert, Chopin, Schumann, Liszt, Wagner, Brahms, Tchaikovsky, Mahler.

A French movement (rejected as a label by its own composers) emphasizing color, atmosphere, and mode over functional harmony. Composers: Debussy, Ravel.

A diverse landscape: atonality and serialism (Schoenberg, Webern, Boulez), neoclassicism (Stravinsky), folk-inspired nationalism (Bartók, Copland), minimalism (Reich, Glass), and electronic music.

An eclectic period without a single dominant style — post-minimalism, spectralism, neo-Romanticism, and music drawing freely on global and popular traditions live alongside one another.

A large work for orchestra, typically in four movements (fast – slow – dance – fast). The cornerstone genre of orchestral music since Haydn.

A piece for soloist (or small group) and orchestra, traditionally in three movements (fast – slow – fast). Built on the contrast between solo and tutti.

A multi-movement work for one or two instruments — most often piano, or a solo melodic instrument with piano. The first movement is usually in sonata form.

A piece for two violins, viola, and cello — and the ensemble that plays it. Traditionally four movements, refined by Haydn into the most prestigious form of chamber music.

Music for a small ensemble (roughly two to nine players), one instrument per part, intended for an intimate space rather than a large hall.

A staged drama set entirely or mostly to music. Combines aria (lyrical solo), recitative (sung dialogue), chorus, and orchestra. Born in Italy around 1600.

A solo song in an opera or oratorio, often in ternary (ABA) form, that pauses the action to reveal a character's inner state.

A sung passage that follows the rhythm of speech rather than a fixed melody. Used to deliver dialogue and advance plot between arias.

A large sacred (or sometimes secular) work for soloists, chorus, and orchestra — like an opera but without staging or costume. Handel's Messiah is the most famous.

A musical setting of the texts of the Roman Catholic liturgy — Kyrie, Gloria, Credo, Sanctus, Agnus Dei. Composed for choir and (often) soloists and orchestra.

A mass for the dead. Texts include the Dies irae, Lacrimosa, and Lux aeterna. Mozart's, Verdi's, Brahms's, and Fauré's are touchstones.

German art song for voice and piano, especially as developed by Schubert, Schumann, Brahms, and Wolf in the nineteenth century.

A study — a short piece designed to develop a specific technical skill. Chopin and Liszt elevated the étude into concert repertoire.

Originally an improvisatory piece preceding something else (like a fugue). Since Chopin, also a free-standing short piano piece in a single mood.

A piece evoking night — usually for piano, lyrical and dreamy. Defined by John Field and made famous by Chopin.

A sequence of stylized dance movements (or related character pieces) in the same key. The Baroque dance suite typically opened with a prelude and ran allemande – courante – sarabande – gigue.

A single-movement orchestral work that depicts a story, scene, or idea — Romantic-era programmatic music at its grandest. Strauss, Liszt, Sibelius.

An orchestral introduction to a larger work (opera, oratorio, ballet) — or a free-standing concert overture in a similar shape and spirit.

A staged dance work set to a unified score. Tchaikovsky and Stravinsky elevated ballet music to symphonic stature.

An African-American art form developed in the early twentieth century, built on swung rhythm, blues inflection, and improvisation. Encompasses dixieland, swing, bebop, cool, hard bop, modal, free, and fusion.

An African-American song tradition rooted in the post-Reconstruction South. Lyrical AAB form, blue notes (lowered 3rd, 5th, 7th), and the twelve-bar progression — the harmonic ancestor of much of rock.

A rhythmic feel in which pairs of eighth notes are played long-short rather than even — the heartbeat of jazz from the 1930s onward. Also a big-band style of the 1930s and 40s.

A turn-of-the-twentieth-century piano style featuring a steady left-hand stride bass and heavily syncopated right-hand melodies. Scott Joplin's Maple Leaf Rag is the classic.

Music transmitted orally within a community, traditionally without a single named composer. Often strophic, modal, and tied to dance, ritual, or storytelling.

A guitar-driven popular style descending from blues, country, and rhythm and blues, established in the 1950s. Built on backbeat drums, electric guitars, and verse-chorus song form.

A late-twentieth-century style built on slowly evolving repetitive patterns, steady pulse, and limited harmonic motion. Steve Reich, Terry Riley, Philip Glass.

Four-on-the-floor club music born in 1980s Chicago — steady kick, hi-hats on the off-beat, soulful samples.

Mellow, jazz-tinged offshoot of house — soft Rhodes chords, warm filtered bass, fewer drops, more groove.

House and techno crossbred — driving 4/4 with stripped-back, percussive hooks and rolling basslines.

Detroit-born industrial dance music — relentless mechanical kick, dark synth stabs, hypnotic minimalism.

Stripped-down techno that builds tension from sparse, slowly mutating loops.

Euphoric club music with long supersaw leads, breakdowns, and big anthemic drops around 138 BPM.

Fast UK breakbeat (170–180 BPM) with rolling sub bass and chopped Amen drums.

Drum & bass's rougher 90s ancestor — chopped Amen breaks, ragga vocal samples, deep reggae bass.

British dance music with shuffled, syncopated drums and bouncy basslines.

Late-90s London 2-step variant — skippy syncopated drums, sub bass wobble, pitched vocal chops.

Chicago dance music at 160 BPM — stuttering chopped vocals and frantic 808 rhythms made for dance battles.

Half-time UK bass music — heavy wobbling sub drops, sparse two-step kicks, 140 BPM.

Pitched supersaw chord stabs, vocal chops, and big melodic drops — Flume-style modern festival pop.

80s soundtrack revival — arpeggiated analog synths, gated reverb snares, neon-noir mood.

Slowed, chopped 80s smooth jazz and corporate music recontextualized — plunderphonics with mall-aesthetic irony.

Hazy, sun-bleached synth pop — lo-fi tape saturation, dreamy reverbs, summer melancholy.

Beatless music designed as atmosphere — slow evolving pads, drones, no foreground melody. Brian Eno's invention.

Ambient's unsettling cousin — dissonant drones, low rumbles, cinematic dread without rhythm.

Music built on a single sustained tone or chord, evolving glacially in overtones and timbre.

Intelligent Dance Music — cerebral, glitchy electronic compositions with intricate programming. Aphex Twin, Autechre.

Music built from digital errors — clicks, stutters, granular artifacts treated as instruments.

Aggressive, chaotic offshoot of jungle — shredded breakbeats, distortion, frenetic 200+ BPM.

Slow downtempo beats with dusty samples and melancholy atmosphere — Bristol's Massive Attack and Portishead.

Laid-back instrumental electronic music — chilled-out grooves around 80–100 BPM.

Intentionally low-fidelity beats — tape hiss, vinyl crackle, mellow piano loops, jazzy chords. The study-beats sound.

Memphis-rap-derived underground beat style — slowed cowbells, distorted 808s, dark menace.

Maximalist pop with pitched-up vocals, sugary synths, and distorted 808s — 100 gecs, SOPHIE.

Classic 90s East Coast hip-hop — dusty sampled drums, hard kick-snare swing, jazzy loops.

Atlanta-born hip-hop style — rolling 808 sub bass, crisp triplet hi-hats, dark menace, 140 BPM.

Aggressive trap descendant from Chicago and the UK — sliding 808s, sparse melodies, ominous tone.

Hazy, ambient-leaning hip-hop — washed-out pads, sluggish drums, ethereal atmosphere. Lil B, Clams Casino.

Hip-hop foregrounding social and political lyrics over warm soulful production.

Moody, atmospheric R&B — sparse drums, ambient textures, introspective vocals. The Weeknd, Frank Ocean.

90s/2000s revival of classic soul — live drums, electric piano, organic groove. D'Angelo, Erykah Badu.

60s African-American popular music fusing R&B and gospel — punchy horns, organ, emotive vocals.

Groove-first style built on syncopated bass, tight drums, wah guitar, and brass stabs. James Brown, Sly Stone.

Early-90s West Coast hip-hop — laid-back grooves, whiny synth leads, deep P-funk-sampling bass. Dr Dre.

Guitar-driven rock made outside the major-label system — jangly tones, melodic hooks, lo-fi sensibility.

Mostly-instrumental rock built on dynamic crescendos rather than verse-chorus form. Mogwai, Explosions in the Sky.

Late-70s reaction to punk — angular guitar, prominent bass, sharp drums, gloom. Joy Division, Wire.

Walls of swirling reverb-drenched guitars with buried vocals. My Bloody Valentine, Slowdive.

Hazy, reverb-soaked pop with breathy vocals — atmospheric and melodic. Cocteau Twins, Beach House.

Rock built on complex, polyrhythmic guitar patterns and odd time signatures.

Catch-all for 80s/90s mainstream-adjacent guitar rock — distorted but melodic, post-punk-descended.

Raw, fuzzed-out, primally-energetic rock — lo-fi DIY production. The Stooges, the Sonics, modern revival.

Late-60s rock evoking the LSD experience — phaser-swirled guitars, sitars, hazy vocals.

Early-90s Seattle hybrid of punk and metal — heavy distorted dropped-tuning, sludgy. Nirvana, Soundgarden.

Heavy fuzz-bass-driven rock with slow doomy riffs — Black Sabbath via the desert. Kyuss, Sleep.

Ultra-slow, crushing metal — minor-key riffs, ominous mood, descended from Sabbath.

Tremolo-picked icy guitars, blast beats, shrieked vocals, intentionally raw production. Norwegian 90s.

Fast, aggressive metal with growled vocals, blast beats, and downtuned brutal riffs.

Technical metal with complex odd-time arrangements and long-form composition. Dream Theater, Tool.

Modern progressive metal characterized by chugging palm-muted polyrhythmic 8-string guitars. Meshuggah, Periphery.

Fusion of metal and hardcore — breakdown chug riffs, screamed verses, melodic clean choruses.

Slow, building, atmospheric metal — long instrumental crescendos. Isis, Cult of Luna, Neurosis.

Pop with synthesizers as the primary instrument — catchy hooks, drum machines. 80s OMD, Depeche Mode.

Bright, melodic guitar pop made outside the mainstream — polished but personal.

Pop with experimental ambition — unusual orchestration, theatrical vocals, conceptual scope. Kate Bush, FKA twigs.

Lo-fi DIY pop recorded at home — intimate vocals, hazy production. Clairo, Boy Pablo.

1980s Japanese smooth-funk pop — slap bass, jazzy chords, glossy synths, urban nostalgia.

Korean pop — glossy productions, EDM drops, choreographed groups, multilingual hooks.

Japanese pop — bright melodic choruses, anime-adjacent aesthetics, idol and band traditions.

Acoustic, narrative-driven music rooted in oral tradition — fingerpicked guitar, plaintive vocals.

Modern folk filtered through indie sensibility — banjo, harmonies, kick-drum stomp. Mumford, Bon Iver.

Roots music drawing on country, folk, and blues — pedal steel, acoustic guitar, storytelling.

American rural music — twangy electric guitar, fiddle, pedal steel, southern vocals.

Country with rock and indie sensibility — rougher edges than Nashville mainstream. Wilco, Uncle Tupelo.

Solo artist accompanying themselves on acoustic guitar or piano — confessional, lyric-first.

African-American art form built on swing, blues inflection, and improvisation — most often piano/bass/drums + horns.

1940s jazz revolution — fast tempos, complex chord changes, virtuosic improvisation. Charlie Parker, Dizzy Gillespie.

1950s reaction to bebop — laid-back tempos, restrained dynamics, lyrical lines. Miles Davis's Birth of the Cool.

Jazz built on modes rather than chord progressions — long open vamps. Miles Davis's Kind of Blue.

Jazz–rock hybrid — electric instruments, complex grooves, virtuosity. Weather Report, Mahavishnu Orchestra.

Jazz fused with Afro-Cuban and Brazilian rhythms — clave, montuno piano, congas.

Late-50s Brazilian style — gentle nylon-guitar samba patterns, soft vocals, jazzy harmony. Jobim, João Gilberto.

Brazilian dance music — surdo, agogô, fast festive percussion-driven carnival rhythm.

Fela Kuti's polyrhythmic Nigerian genre fusing highlife, jazz, and funk — long horn-driven grooves.

Contemporary West African pop (distinct from afrobeat) — bouncy log drums, smooth vocals. Burna Boy, Wizkid.

West African dance music — Ghanaian guitar bands with brass and lilting upbeat groove.

Jamaican music with offbeat skank guitar, one-drop drums, and prominent bass. Bob Marley.

Reggae's instrumental remix tradition — heavy bass, spacey echo and reverb on drums. King Tubby, Lee Perry.

Reggae's faster predecessor — upbeat offbeat guitar skank, horns, walking bass.

Western art music — full orchestra, traditional forms, Mozart-Beethoven mainstream. (Used loosely for any orchestral concert music.)

Western art music c. 1600–1750 — harpsichord and strings, ornamented counterpoint. Bach, Handel, Vivaldi.

Western art music c. 1820–1900 — lush orchestras, chromatic harmony, sweeping expressive melody. Tchaikovsky, Brahms.

Late-20th-century style built on slowly-evolving repetitive patterns and steady pulse. Reich, Glass, Riley.

Contemporary classical with traditional tonal materials — piano and strings chamber music. Max Richter, Ólafur Arnalds.

Music written for film — full orchestra, swelling strings, dramatic dynamics. Hans Zimmer, John Williams.

Post-2000 contemporary classical — dissonance, atonality, experimental art music.