Which opera has more parts including acts and tableaux, Le roi d'Ys or Stiffelio?
Le roi d'Ys Le roi d'Ys ("The King of Ys") is an opera in three acts and five tableaux by the French composer Édouard Lalo, to a libretto by Édouard Blau, based on the old Breton legend of the drowned city of Ys. That city was, according to the legend, the capital of the kingdom of Cornouaille.
Coups de roulis Coups de roulis is an opérette in three acts with music by André Messager and a French libretto by Albert Willemetz, based on the 1925 novel by Maurice Larrouy.