The Masked Ball: Act I, Scene 2. “One thing you’ve yet to tell me” (Gustavus, Ulrike, Oscar, Ribbing, Horn, Anckarstroem, Cristian, Chorus) by Geoffrey Mitchell Choir , Jill Grove , Anthony Michaels‐Moore , Dennis O'Neill , Christopher Purves , Lynda Richardson , Brindley Sherratt , Ronald Wood , London Philharmonic Orchestra , David Parry