Bill's Hat (1967)

The film was a part of the whole performance/installation of "Bills' Hat", which included an altar with a hundred candles and pots of flowers. From the ceiling hung a pillow shaped like a heart. A woman lay silently on top of a piano with the hat on her belly. Besides the 50-minute movie projected on a screen, four simultaneous slide show featured the "hundreds" of people wearing the hat, and some of those sitting in the audience had small hand-held projectors that projected images on the backs of others.