atonality

(ā′tō nalə tē)

noun

Music in composition, the organization of tones in which all tones of the chromatic scale have equal importance, without relation to a tonal center or key; the absence of tonality

See atonality in American Heritage Dictionary 4

noun pl. a·to·nal·i·ties
Music
  1. The absence of a tonal center and of harmonies derived from a diatonic scale corresponding to such a center; lack of tonality.
  2. A style of composition that lacks such a tonal center and its derived harmonies.

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