Watch Heavy-Light (1973) Official Trailer

An abstract animated film in which colored, richly textured light moves in a black, three-dimensional space. The pictures and the electronic score are unified in a strict structure made of three main sections which progressively develop three subsections. The film may look like it was made using computers or video to the unaware, but it is purely the result of animation and much optical printing. Preserved by the Academy Film Archive in partnership with iotaCenter and National Film Preservation Foundation in 2007.