The Under-Pup is a 1939 American feature film by Richard Wallace that introduced soprano singing star Gloria Jean to the screen.

[3] Joe Pasternak held extensive auditions to find the lead throughout 1938, during which he discovered Gloria Jean.

Let’s get the piano tuned and bring her back tomorrow.’ I got all kinds of lectures on the way home about being a little more subdued.

[6] Robert Cummings had just appeared in Three Smart Girls Grow Up and been signed to a long term contract with Universal.

Many of the cast members from The Under-Pup appear in the second film, but with different character names.