Mariusz Treliński, artistic director of Warsaw’s Polish National Opera, makes his Met debut with a double bill of two rarely performed one-act works: Tchaikovsky’s romantic fairy tale Iolanta, about the psychological awakening of a blind princess, and Bartók’s harrowing Duke Bluebeard’s Castle, in which newlywed Judith must open seven locked doors to discover the full depths of her husband’s dark secrets. Valery Gergiev conducts the double bill, which is a co-production with Teatr Wielki-Polish National Opera. Anna Netrebko stars as the title character in Iolanta, with Piotr Beczala and Alexey Markov as Vaudémont and Robert, two rivals for her love. Nadja Michael sings the central role of Judith in Duke Bluebeard’s Castle, with Mikhail Petrenko as her mysterious and menacing new husband.