“The engrossing performances of a strong cast of singers provided the solid foundation for this remarkable staging . . . Ailyn Pérez’s warm, rich, supple voice evoked the crucial poignancy for the parte seria of the neglected Countess . . .  The full talent of these two singers, however, lay in the exchanged roles of the Countess and Susanna during the disguise scene of Act IV, in which each singer was able to capture the other’s sound so as to make the switch totally convincing and, for the Count, devastatingly effective . . . The sum of all these strengths in this production and performance was, in short, one for the books. “