Porky at the Crocadero (1938)

The Crocadero nightclub. Porky has his diploma from the Sucker Correspondence School of music, and has dreams of being a bandleader, but he's broke. He gets a job at the club washing dishes. His boss mistakes Porky going after a fly for loafing and fires him. His bandleaders don't show, and he brings Porky back to impersonate several famous bandleaders.