#dissonance  disagreeable sounds
  exclusion:  #harmony
  supertype:  #sound_property_or_value__sound_property__soundproperty  an attribute of sound
  subtype:  #discordance__discord  a harsh mixture of sounds
  subtype:  #disharmony__inharmoniousness  a lack of harmony
  subtype:  #cacophony  loud confusing disagreeable sounds

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