Japanese avant-garde composer known for experimental compositions like 1960's Kaiki.
He studied music with the likes of John Cage and Tomojiro Ikenouchi.
He won the 33rd Suntory Music Award and was honored with Japan's Order of Culture.
He was married to Yoko Ono from 1956 to 1963.
He was married to Yoko Ono prior to her association with The Beatles.