The following actors are listed in studio records as appearing in this film, but were not seen in the print: Josef Swickard as the doctor, Billy Gilbert (I) and Cecilia Parker. Stuart Erwin (I) was listed as an actor in a Hollywood Reporter production chart, but he was not seen in the film either.

Because the action of the movie is so completely wedded to the music, the script was mimeographed on special music paper, with the action and dialogue printed between the staves and timed to each measure.