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Music theory — harmony, melody, and counterpoint

55 articles

Leitmotif

Leitmotif, also known as leading motive, is a recurring musical theme in a dramatic work. It is used to represent characters, places, or ideas, and is most closely associated with Richard Wagner.

List of musical symbols

List of musical symbols: the marks of Western music notation, including staff, clefs, accidentals, dynamics, articulations, and slurs; from 9th-century neumes to Unicode Musical Symbols U+1D100–U+1D1FF and SMuFL's nearly 2600 glyphs.

Melody

Melody, also called a tune or line, is a succession of pitches in rhythm perceived as a single coherent line. Distinguished from harmony and counterpoint by its horizontal dimension; defined by contour, conjunct or disjunct motion, and phrase structure ending in cadences.

Modulation (music)

Modulation (music), also called a key change, is the shift of tonal center within a composition, distinct from brief tonicization. Main methods: pivot-chord, direct (truck-driver), common-tone, chromatic, and enharmonic modulation; dominant is the most common goal in major keys.

Music theory

Music theory is the study of how music is organized in pitch, rhythm, harmony, and form, spanning Western tonal traditions, Schenkerian and Riemannian analysis, global theoretical systems, pedagogy, and cross-cultural scale research.

Musical form

Musical form, also called structure, is the patterning of music over time through repetition, contrast, and variation. Covers verse-chorus design, phrase structure, letter labels, sonata and rondo forms, and Formenlehre.

Oriental riff

Oriental riff (East Asian riff, Chinaman lick): a nine-note Western-composed melodic cliché tracing to 1847 Aladdin stage shows, used in songs like Kung Fu Fighting (1974) and Turning Japanese (1980) to signify East Asia.

Ornament (music)

Musical ornament: decorative short notes or symbols (trill, mordent, appoggiatura, turn, grace note) added to embellish a melody, prominent in late Renaissance, Baroque, and Classical eras and central to historically informed performance.

Passacaglia

Passacaglia: a Baroque variation form of serious character in triple meter, built on a repeating bass or ostinato theme; Spanish in origin (pasacalle), codified by Frescobaldi in 1627, closely related to and often interchangeable with the chaconne, revived by Brahms, Webern, and Britten.

Picardy third

Picardy third (tierce de Picardie): a major tonic chord ending a minor-key piece or section, made by raising the chord's third a semitone; common in Renaissance and Baroque music, later used by Chopin, Dvorak, and the Beatles.

Polyphony

Polyphony (Greek πολυφωνία, many voices) is a musical texture of two or more independent melodic lines sounding at once, distinct from monophony and homophony, created through counterpoint, central to medieval and Renaissance music, and found in folk traditions worldwide.

Portamento

Portamento (port.), from Italian portare "to carry," is a smooth audible glide between two pitches used in singing and string playing, classified into string types like B/L/S slides, and implemented on synthesizers via mono-mode glide time, notably in sliding 808 bass.

Quartal and quintal harmony

Quartal and quintal harmony are methods of building chords by stacking fourth or fifth intervals instead of the traditional third. This creates an open, undecided sound.

Refrain

Refrain: a repeated line, phrase, or musical passage recurring at set points in poems and songs; from Old French refrain; distinct from a chorus and central to rondeau, rondo, and verse-chorus forms.

Rondo

Rondo: a musical form in which a recurring refrain (A) in the tonic alternates with contrasting episodes, in layouts such as ABACA (five-part) and ABACABA (seven-part sonata rondo); derived from the French rondeau and typical of Classical finales.

Seventh chord

A seventh chord is a four-note chord built by adding a seventh above a triad's root. Five common types (major, dominant, minor, half-diminished, diminished seventh) drive Western harmony; the dominant seventh's tritone defines the key.

Sharp (music)

Sharp (music): the accidental ♯, which raises a written note by one semitone. Covers notation, key signatures (F-C-G-D-A-E-B), enharmonic equivalents, tuning, and the sign's history from the square b.

Sonata form

Sonata form is the three-section movement structure (exposition, development, recapitulation) of Classical and Romantic instrumental music, originating in Baroque rounded binary and central to symphonies, sonatas, and concertos.

Song structure

Song structure (song form): the arrangement of verses, choruses, prechoruses, and bridges in popular music. AABA/32-bar form dominated 1920s–1960s Tin Pan Alley; verse-chorus form overtook it in the late 1960s; streaming-era pop compresses sections.

Staff (music)

Staff (music), also called stave: the set of five horizontal lines and spaces on which Western musical notes are written to show pitch, used with clefs; developed from 9th-century lines and Guido of Arezzo's four-line staff around 1030 AD.

Suspended chord

Suspended chord (sus chord): a triad whose third is replaced by the second (sus2) or fourth (sus4), making it neither major nor minor; formulas 1-2-5 and 1-4-5, plain sus means sus4, from classical suspension voice leading.

Tessitura

Tessitura (Italian, "texture") is the average register where a melody, vocal part, or instrument's notes mostly lie, distinct from range; for singers it is the comfortable part of the voice, quantified by Titze's time and cycle doses and the tessiturogram.

Texture (music)

Texture (music): how melodic, rhythmic, and harmonic layers combine in a piece. Main types are monophony, homophony, polyphony, and heterophony, described as thick, thin, dense, or transparent.

Tonality

Tonality: the Western music-theoretical principle organizing pitch around a tonic, first named tonalité by Choron in 1810; covers the major–minor common-practice system, its historical rise and twentieth-century dissolution, and critiques of the concept.

Triad (music)

Triad (music): a three-note chord of root, third, and fifth, the basic unit of tonal harmony. Also called harmonia perfetta; four qualities (major, minor, diminished, augmented), three inversions, extends to seventh chords.