Heterophony

This article is about the musical meaning. For the linguistic meaning, see Heterophone. In music, heterophony is a type of texture created through the simultaneous variation of a melodic line. This can refer to a kind of complex monophony in which there is only one basic melody, but realised at the same time in multiple voices, each of which play the melody differently, either in a different rhythm or tempo, or with different embellishments and elaborations. The term was invented in systematic musicology as a subcategory of  polyphonic music, in which separate melodies are played simultaneously. The term heterophony was coined by Plato <references/> and is used in many areas of the world. Morton (1978) suggests, at least for Thai music, the term polyphonic stratification.
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(n.)
An abnormal state of the voice.
  

Eng: heterophony..
Urdu: موسیقی ۔ دو گانا ۔کورس ۔ دو یا زیادہ ۔