Ivan Wyschnegradsky

Ivan Alexandrovich Wyschnegradsky (US: /vɪʃnəˈɡrɑːdski/ vish-ne-GROD-skee; May 14 [O.S. 2 May] 1893 – September 29, 1979), was a Russian composer primarily known for his microtonal compositions, including the quarter tone scale (24-tet: 50 cents) utilized in his pieces for two pianos in quarter tones. He also used scales of up to 72 divisions (mainly third (18-tet: 66.6 cents), sixth (36-tet: 33.3 cents), and twelfth tones (72-tet: 16.6 cents)). For most of his life, from 1920 onwards, Wyschnegradsky lived in Paris.

Not to be confused with the politician and scientist Ivan Vyshnegradsky.
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