- Polyharmony
Polyharmony is the use of two or more harmonies against each other, common in
20th century music . [cite web |url=http://www.music.vt.edu/musicdictionary/textp/Polyharmony.html |title=Polyharmony |publisher=Virginia Tech |accessdate=2007-08-04] This originated form the ninth chords ofDebussy (1-3-5-7-9), which suggested more than one key. Contemporary composers stack additional notes, suggesting even more contrasting keys.References
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