Music: Conlon Nancarrow

This is one of Conlon Nancarrow's altered player piano pieces. Nancarrow (an American composer) has resided in Mexico City D.F. for the past 50 years. His involvement in the Spanish Civil War as a member of the Lincoln Brigade won him the dubious honor of being an undesirable in the eyes of the American government. He fled to Mexico City where he lived in virtual obscurity and isolation (until the late 1970s). He could find no musicians to play his extremely difficult music, so he acquired a player piano roll punching machine and began composing strictly for the mechanical piano. Most of his compositions are titled "Studies."

The film is a study of light as it emanates from the title itself, "enacting" the rhythms of Study #15.