Ivan Wyschnegradsky

Ivan Wyschnegradsk (1893-1979, Russian: Иванъ Александровичъ Вышнеградскій) was a Russian composer primarily known for his microtonal compositions, including the quarter tone scale, though he used scales of up to 71 divisions. Greatly influenced by Alexander Scriabin as a young man, Vïshnegradsky had a mystical vision which made him feel compelled to write music in intervals of less than a half-step. In 1920, he emigrated to Paris.