Trichord

In music, especially in musical set theory, a trichord is a collection of three pitch classes, often one of the four ordered trichords in a tone row or set form. Trichords may be used to create derived rows and invariance.

[edit] See also

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Collections of pitch classes	edit
Monad \| Dyad \| Trichord \| Tetrachord \| Pentachord \| Hexachord