The Prisoner of Swing (1938)

This short is a take-off on the Ronald Colman version of Prisoner of Zenda, sort of like a 1930's Abraham-Zucker film. The King is going to outlaw swing music upon his coronation so his loyal retainers have him kidnapped & replaced with his cousin, who looks just like him. It's very funny & surprisingly well done and you'll especially enjoy it if you've seen the film. The characterizations and mannerisms are spot on & the only flaw is that the sound quality isn't optimal. But it's worth putting up with to be able to see the film.

This appears as one of the extras on the recently-released DVD of Dawn Patrol.