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Encyclopedia of Microtonal Music Theory

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trichromatic

[John Chalmers, Divisions of the Tetrachord]

Trichromatic is a term introduced by Ervin Wilson to describe a [musical] scale or harmonia generated by katapyknosis by three rather than the two and four of standard theory.

The melodic proportions of the trichromatic pykna are 1:1 and 1:2.

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