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The Flintstones: 4x6

The Flintstone Canaries

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.

The Flintstones: Season 4 Episode 6
Oct. 24, 1963