National Theatre, direction, Rapley Theatre Company, Edmund Plohn, manager, John Shubert announces Cole Porter's new musical play starring Clifton Webb, Lupe Velez, Libby Holman, entitled "You Never Know," with Toby Wing, Charles Kemper, April, George Dobbs, Catherine Crawford, Roger Stearns, and Rex O'Malley, music by Cole Porter and Robert Katscher, lyrics by Cole Porter, book adapted and directed and additional lyrics by Rowland Leigh, dances by Robert Alton, settings by Albert Johnson, orchestra directed by John McManus, orchestrations by Hans Spialek.