James Lee Byars
Releasing 'O?', 1972
"The perfect sound? “O.” A sound that someone would like. The vowel sounds I think are very beautiful. The ‘a’, ‘e’, ‘I’, ‘o’, ‘u’. Anyone of those sounds. The ‘o’ sound is beautiful."
Source: James Lee Byars interviewed by Paul De Vree at documenta 7 in front of The Golden Tower, 1982, Audio fragment from ‘Kroniek’, 10’05”