Ballet Mécanique (1923-4) is a Dadaist, post-Cubist art film conceived, written, and co-directed by artist Fernand Léger and filmmaker Dudley Murphy (with cinematographic input from Man Ray). It has a musical score by the American composer George Antheil (However, the film premiered with no soundtrack, on September 24th, 1924 at the Internationale Ausstellung neuer Theatertechnik in Vienna). It is considered one of the masterpieces of early experimental filmmaking.