It's a song from MGM's blockbuster "talkie" musical The Hollywood Revue of 1929, designed to showcase all their silent-era stars as they made the scary transition to sound. The studio's chameleon "Man of a Thousand Faces" wasn't actually in that movie, though. Instead, a chorus sang about Lon Chaney surprising them in the form of a spider or a monster because, really, who knew what this master of makeup and body manipulation might look like next?...