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The Duke Steps Out is a 1929 American synchronized sound comedy-drama film directed by James Cruze and starring William Haines and Joan Crawford. While the film has no audible dialog, it was released with a synchronized musical score with sound effects using both the sound-on-disc and sound-on-film process. The film is lost, but the Vitaphone sound discs track of music and sound effects survive in the UCLA Film and Television Archive.