Polychord

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In music and music theory a bichord or polychord consists of two or more chords, one on top of the other, multiple chords. Extended chords contain more than one triad:

Separate chords within an extended chord

and thus the creation or perception of polychords depends on the chords separation through register or timbre. The use of polychords may suggest polytonality. Harmonic parallelism may suggest bichords.

Examples may be found in Igor Stravinsky's Petrushka, p.15, and Rite of Spring, "Dance of the Adolescents" (1921) (DeLone et. al. 1975, p.336).

See also: secundal, tertian, quartal.

[edit] Source

  • DeLone et. al. (Eds.) (1975). Aspects of Twentieth-Century Music. Englewood Cliffs, New Jersey: Prentice-Hall. ISBN 0-13-049346-5.
Chords

By Type Triads Major · Minor · Augmented · Diminished

Sevenths Major · Minor · Dominant · Diminished · Half-diminished · Minor-Major · Augmented major · Augmented minor

Extended Ninth · Eleventh · Thirteenth

Other Sixth · Augmented sixth · Suspended · Altered · Added tone · Polychord · Quartal and quintal · Tone cluster

By Function Diatonic Tonic · Dominant · Subdominant · Submediant

Altered   Borrowed · Neopolitan sixth · Secondary dominant · Secondary subdominant


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