The automated music machine seen during the opening credits and at times in the rest of the film is called an orchestrion - a generic name for a machine that plays music consisting of several instruments, including percussion, a pipe organ and/or a piano, designed to sound like a band or orchestra.
First and penultimate film produced by actor George Montgomery's production company. It would be seven years before his company's second and last film Guerillas in Pink Lace (1964), in which he was the star, director, a producer and co-writer.