Dancing on a Dime (1940)

From Wikipedia: "Dancing on a Dime" is a 1940 Paramount Pictures movie directed by Joseph Santley about five actors and dancers putting on a show while living in a theatre. It is adapted from a novel of the same name written by Dorothy Young, which itself is based loosely on her own life. It starred Robert Paige, Peter Lind Hayes, Eddie Quillan, Frank Jenks, and Grace McDonald. It is known for its song, "I Hear Music".