Continuity mistake: When the three pigs are listening to the wolf playing his trumpet in Hell, the position of the double bass behind the pig who is playing the piano changes between shots.
Continuity mistake: When the pigs are performing with the wolf's spirit at the end of the cartoon, the sign saying "The Three Little Bops" has a yellow background, but in the next shot changes to a peach colour.
Continuity mistake: When the three pigs are performing at the House of Straw, the saxophone behind the pig playing the guitar changes position between shots.
Trivia: There is no "That's all, Folks!" title card after the fade out. Just "The End" with white letters on a black background.