Titanic's David Garrison, as the conman Sandor, teaches "A Simple Little System" to the chorus boys and girls of Bells Are Ringing. Prince stars as telephone answering-service operator Ella Peterson in the upcoming Broadway revival of Betty Comden-Adolph Green-Jule Styne's Bells Are Ringing, set to begin performances at the Plymouth Theatre March 13. Opening is set for April 12.