music from charles mingus ( thanks to the stairway forum )
link
( there's more music in the parent directory )

john cage
One of 20th-century America’s great musical innovators. He experimented with prepared pianos, unusual percussion instruments, electronics, weird notation and even silence, as well as introducing the element of chance into the performance of his music.
link

from the same site:
an interview with salvador dali (1963)

also check their complete sound section