Ivan Wyschnegradsky
Ivan Wyschnegradsky (May 14, 1893 – September 29, 1979) was a Russian composer, later of French citizenship (from 1920 onwards), primarily known for his microtonal compositions.
His microtonal works are mostly set in 24edo (quarter tones), with some compositions also in 36edo (sixth tones), and 72edo (twelfth tones), along with some mixed microtones compositions (especially some of his early compositions that include one 12edo piano but also have other instruments playing in finer divisions of the octave). In addition, he also has one composition in 18edo (third tones) and another in 31edo.
One of his most known works, 24 Préludes dans l'échelle chromatique diatonisée à 13 sons, introduces an 11L 2s MOS scale, generated by a circle of "major fourths" of 24edo (550¢ ≈ 11/8) and which he treats as a "diatonicized chromatic scale" in reference to the similar structure of the diatonic scale.
He influenced many composers after him, including Bruce Mather.
See also
Association Ivan Wyschnegradsky (English)
Association Ivan Wyschnegradsky (French)