Ballet Mécanique (1923–24) is a Dadaist, post-Cubist art film conceived, written, and co-directed by the artist Fernand Léger and the filmmaker Dudley Murphy (with cinematographic input from Man Ray). It has a musical score by the American composer George Antheil. The film premiered in a silent version on September 24, 1924 at the Internationale Ausstellung neuer Theatertechnik (International Exposition for New Theater Technique) in Vienna presented by Frederick Kiesler. It is considered to be a major work of early experimental filmmaking.