Carnatic music originated in southern India, and centers around singing. It depends on shruti, which is the smallest interval of pitch that humans can detect. Though sources differ over how many shrutis exist, the most agreed-upon number is 22.
Carnatic Music Has More Notes Than Any Other Style
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Key Facts In This Video
The Carnatic music system has 22 notes in its standard scale. 01:06
Microtonal music uses the notes between the 12 notes in an octave. 02:37
Harry Partch was a composer who built custom instruments to play microtonal music. 05:22