In this episode, it is revealed that the population of Mayberry is around 2,000.
This is the second episode of the series in which the choir has a problem with Barney's voice. The first was in Season 2, Episode 20, "Barney and the Choir."
Character actor Olan Soule, who plays the choir director here, would experience another difficult choral situation in the TV series Arnie (1971), in the episode "No Harmony in Trying."
Gomer's audition song, of which the very end is heard, that he sings for John Masters and Andy is "In The Gloaming." The song also is featured in Season 7, Episode 3, "The Barbershop Quartet."