Hollywood Singing and Dancing: A Musical History – The 1920s: The Dawn of the Hollywood Musical 2008 one on netflix

The 1920s was a time of great change in Hollywood. This program tells the story of the advent of sound technology for movies and the emergence of talkies and musicals in Hollywood. While audiences cried out for more, the movie industry struggled to adapt to the strange new technology. The result was an explosion of movie musicals by the end of the decade.