Groucho does a very brief Jack Benny impression in the film. After "Otis P. Driftwood" makes the speech to the audience, Groucho gestures to the orchestra pit and says, "Play, Don!" This is a Benny line from the radio series; Jack Benny's orchestra leader, Don Bestor, was always cued this way (by the way, Bestor originated the J-e-l-l-O jingle for the Benny show).
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