Norman McLaren
Who knew about McLaren? This "Dots" film was made in 1940, the sound is painted onto the films audio portion.
More:
http://www.youtube.com/watch?v=uC0w-yhkR1I
http://www.youtube.com/watch?v=ZnLJqJBVCT4
http://www.youtube.com/watch?v=TgJ-yOhpYIM
Thanks NANO  ¶ 4:15 AM