Petticoat Junction - Season 5 Episode 20

Uncle Joe's barbershop quartet have entered the Winter Festival competition. One member is singing a bunch of bad notes. They soon realize that the offending member is Joe. Joe decides to step aside if they can find somebody to replace him. They quickly find Grampa Jenson to fill Joe's place. This leads to the end of Joe's friendship with Sam. Selma, the head of the Winter Festival's judging committee, asks Joe to be on the panel of judges. Her request has an ulterior motive as Henrietta has entered the contest. Selma implies that she will give the Carson-Elliott Enterprises her crop dusting business if Joe votes for Henrietta. Something Sam does at the competition repairs his and Joe's friendship