One in a series of one-reel subjects in the all-industry public relation series, "The Movies and You," this highly entertaining featurette skillfully combines presentation of mechanical details with a history of sound and clips from earlier films. It goes into mechanical techniques and offers examples of actual shooting on set and location. Articles have been written about the techniques of film production, including sound, but none of them has ever presented so clearly and interestingly the manifold problems of the sound man as does the film. The combined presentation of mechanical details with a history of sound and clips from earlier films could hardly have been handled more skillfully.