Watch Hollywood's Musical Moods for Free: How to Stream the Movie Online at 123Movies. . In the silent film era, movies were never really silent. In the background of films that made figures like Charlie Chaplin and Buster Keaton into cultural icons, were the musical giants whose compositions defined the very films that captivated a generation of movie-goers. Arthur Kleiner converses with the still-living legends from that bygone golden age of cinema.