HumanitiesWeb.org - Glossary definition: Isorhythm
Isorhythm

A technique for musical organisation used during the fourteenth and early fifteenth centuries in which the tenor repeats a certain pattern of pitches (the "colour") and a certain rhythmic pattern (the "talea"). The colour and talea may be different lengths. Used commonly in the motet; also used in some mass settings, for example in the Messe de Notre Dame by Guillaume de Machaut.

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