His Musical Career (also known as Musical Tramp) is a 1914 American comedy silent film made by Keystone Studios starring Charlie Chaplin. br br Synopsis br Charlie and his partner Mike work at a piano store, whose manager orders them to deliver a piano to Mr. Rich at 666 Prospect Street and repossess one from Mr. Poor at 999 Prospect Street. Hilarity ensues when they do exactly the opposite after mixing up the addresses of their customers. br br Cast br br Charlie Chaplin as Charlie the piano mover br Mack Swain as Mike br Charley Chase (as Charles Parrott) as Piano store manager br Fritz Schade as Mr. Rich br Cecile Arnold as Mrs. Rich br Frank Hayes as Mr.