The Metropolitan Opera has announced a cast change for its Dec. 6 performance of “Il Trovatore.” The company said, “For tonight’s performance of Verdi’s ‘Il Trovatore,’ the role of Manrico will be sung by Arturo Chacón-Cruz.” The Mexican tenor will replace the originally scheduled Gwyn Hughes Jones. This performance will mark Chacón-Cruz’s fourth performance at the Met following his surprise {…}