Fred forms a barbershop quartet to compete on the ""Hum Along With Herman"" television show, and in the process discovers that Barney is a natural lead tenor. The catch is that Barney can sing only when he's in the bathtub.

Wilma is a celebrity when she gets a shot at the big leagues and becomes a pitcher for the Bedrock Dodgers after nailing a couple of robbers with a melon at the grocery store. Wind-Up Wilma was a 30-minute episode that was part of "The Flintstone Special" limited-run prime time television revival of The Flintstones produced by Hanna-Barbera Productions which aired on NBC on October 4, 1981.

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