Bedrock television's highly popular Hum-Along With Herman Show announces a barbershop quartet contest. The coveted first-place prize is a tropical vacation at Boulder Beach for each member of the tuneful foursome to successfully audition, appear on the next week's Hum-Along With Herman, and be selected by the judges as best quartet. Desirous, of course, of being victor in the contest, in that a stay at Boulder Beach would enable him to relax beneath the sun and fish from atop large boulders on said beach, Fred organizes a "barbershop" quartet with his co-workers at the rock quarry, with noon hour practice on each workday.
Fred's colleagues are capable hummers despite never learning to read music and bring advised by Fred to "fake it". However, Fred as the quartet's lead singer is ear-achingly tortuous for every man and dinosaur at the quarry- and triggers a boulder avalanche, with Flintstone continuing his untalented aria after huge rocks bury him! Fred's musical group has no hope of auditioning successfully without a truly sweet-sounding center vocalist, and to Fred's delight, he hears Barney singing brilliantly in the Rubble bathtub and shanghais his closest friend into joining the Flintstone Canaries in the required capacity, but Barney is only "in good voice" while in soapsuds and bath water.
Improvisation being the brother of invention, Fred modifies the act of the Canaries to include a naked, singing Barney paddling as though he were in a boat, in a bathtub amply filled with water and pulled on a rope by the informally dressed supporting hummers, i.e. Fred and two rock quarry employees.
As fate decrees, the sponsor of Hum-Along With Herman is the goopy Soft Soap, and the Canaries, after innovatively topping the auditions, appear on the relevant Hum-Along With Herman in the final minute of the show as performers in a Soft Soap commercial announcement, all four of them naked in sudsy water in a bathtub extolling the virtues of the product.
- Vic Stoney (only appearance)
- Rocky (only appearance)
- Herman (only appearance)
- Announcer (only appearance)
- Joe (only appearance)
- Sam (only appearance)
- Police officers
- Army soldiers (only appearance)
- General (only appearance)
- Governor (only appearance)
- Cashier (only appearance)
- Agency Man (only appearance)
- Dogs (only appearance)
- Animal act (only appearance)
- Boulder Beach (only appearance)
- Pterodactyl Airlines (mentioned)
- Soft Soap (only appearance)
- Automatic dishwasher (only appearance)
- Golf clubs
- Record changer
- Rabbit (as an antenna)
- Pterodactyl (as a record player)
- Brontosaurus (as a Bronto-Crane and a cab)
- Mammoth (as a whistle)
- Sports car (only appearance)
- Bathtub (only appearance)
- Dinosaur cab (only appearance)
- Tank (only appearance)
- Cannon (only appearance)
- Police bicycle
|Alan Reed||Fred Flintstone|
|Jean Vander Pyl|| Wilma Flintstone|
|Mel Blanc|| Barney Rubble|
|Howard Morris|| Herman|
|John Stephenson|| Joe|
- Stoney River is a spoof of the famous song, Swanee River.
- This episode is a spoof of Sing Along with Mitch, starring Mitch Miller.
- Betty is seen is this episode, but not heard. At the end of the episode she is sitting with Wilma waiting for the boys to appear on the show.
- During the gravel pit rehearsal of "Stoney River", Fred sings the second verse to the tune of the song's refrain.
|Season 4 of The Flintstones|
|"Ann-Margrock Presents" • "Groom Gloom" • "Little Bamm-Bamm" • "Dino Disappears" • "Fred's Monkeyshines" • "The Flintstone Canaries" • "Glue for Two" • "Big League Freddie" • "Old Lady Betty" • "Sleep On, Sweet Fred" • "Kleptomaniac Pebbles" • "Daddy's Little Beauty" • "Daddies Anonymous" • "Peek-a-Boo Camera" • "Once Upon a Coward" • "Ten Little Flintstones" • "Fred El Terrifico" • "The Bedrock Hillbillies" • "Flintstone and the Lion" • "Cave Scout Jamboree" • "Room for Two" • "Ladies' Night at the Lodge" • "Reel Trouble" • "Son of Rockzilla" • "Bachelor Daze" • "Operation Switchover"|