Diaphonic Cycles

A musical structure invented by Ervin Wilson combining both the segmental identity of tetrachordal based scales with the subharmonic series typical of Schlesinger's Harmoniai.

Diaphonic cycles have two regions of segmental identity or near identity; the Triaphonic and Tetraphonic Cycles have three and four respectively.

[from John Chalmers, Divisions of the Tetrachord]

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