MGM sound engineer Douglas Shearer takes us for a behind the scenes look at how the sound portion of a talking picture is created. Uses Bitter Sweet (1940) (a Jeanette MacDonald and Nelson Eddy picture) and Comrade X (1940) to illustrate the techniques. Parts of this short are in Technicolor, including a stunning screen test of Greer Garson for Blossoms in the Dust (1941). The conclusion is a montage of trailers for coming MGM pictures featuring almost the entire MGM constellation of stars.