- Betty Boop(uncredited)Music by Johnny GreenPlayed during the opening creditsPlayed again when the laughing gas goes out the window
- Sweet Betty(uncredited)Music by Sammy TimbergPlayed at the beginningPlayed again when Betty approaches Koko with the pliers
- Good-Night, Ladies(uncredited)[Played when the cuckoo leaves the clock]
- I'm Daffy Over You(uncredited)Written by Chico Marx and Sol ViolinskyPlayed when Koko emerges from the inkwell
- Valse des rayons(uncredited)From "Le papillon"Music by Jacques OffenbachPlayed when Betty attempts to pull Koko's tooth
- Ha! Ha! Ha!(uncredited)Composer undeterminedSung by Betty and Koko
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