When Pyle & Jones audition for the talent show, Jones sings "Santa Lucia" which is the number that Gomer started singing along with the choir(in Season 4, Episode 20:The Song Festers)while he was working on the choir director's car in the Andy Griffith. Gomer gets chosen to replace Barney for the tenor solo.
The song Private Jones sings during his try-out is the same song Gomer sings during The Song Festers (1964).
The song Private First Class Lester Hummel (William Christopher) plays on the clarinet during his audition is the classic western folk song "Home on the Range".