This film is part of the Structural/Materialist movement formalized, from the 1970s onward, by members of the London Film-Makers' Cooperative, who were working to deconstruct the cinematic illusion in its many aspects. By pasting "Letratone" screentone directly onto the image and sound parts of a 16mm film strip, so the image is read as a sound at the same time as it is seen on the screen, the filmmaker intends to dethrone the primacy of sight in cinema and to establish a kind of audiovisual parity. Her fortuitous discovery that one of the frames produces the middle C note during projection lead her to compose the film as a musical piece. (Pip Chodorov)