I've played looping music with live films several times -- my favorite was a performance in a garden in the east village in nyc, where a projectionist projected a 16mm black and white film on me (I was wearing a white shirt, and the projection covered my shirt and face, and spilled out to the environment behind me) while I played. the film was a short film someone filmed in NYC I think maybe in the 1930s or 1940s -- I don't even know its title, but someone basically filmed people (mostly children) in the street. Kids dancing, people leaning out of the windows smoking cigarettes -- it was perfect for looping, and very magical because of the combination of intimacy (lots of closeup face photography) and history. And I'm a big fan of black and white . . .