sentences:  During its Philadelphia run, President Kennedy was assassinated, necessitating the replacement of the opening number, "Long Live the King (If He Can)".The musical opened on Broadway, directed and choreographed by Joe Layton, on December 8, 1963 at The Broadway Theatre, where it ran for 112 performances and four previews.The cast featured Florence Henderson as Mary, José Ferrer as Charles, Irene Browne as the Queen Mother, Sean Scully as Nicholas, British music hall star Tessie O'Shea as Ada Cockle, and Roderick Cook as Peter Northbrook.