polyphony

polyphony is a   Noun

Definition:

[1] Multiplicity of sounds, as in the reverberations of an echo.

[2] Plurality of sounds and articulations expressed by the same vocal sign.

[3] Composition in mutually related, equally important parts which share the melody among them; contrapuntal composition; -- opposed to homophony, in which the melody is given to one part only, the others filling out the harmony. See Counterpoint.

Synonyms: