Lawrence Welk and His Champagne Music (1950)

Lawrence Welk and his Champagne Music (and Orchestra) are playing their music in a fictional nightclub setting in which one of the band musicians is out in the audience playing a stage-struck fictional waiter who, in his efforts to get the Maestro to recognize his whistling ability, and bring him up on stage as a new discovery, keeps dropping dishes on the fictional audience. Welk lets him come on stage and amaze everybody on the fiction nightclub set with his amazing whistling. At least, when he was dropping dishes and whistling. Welk's orchestra wasn't playing a polka. There is always a bright side.