 Rudolf Bing, General Manager of the Metropolitan Opera House, was highly impressed with Żylis-Gara's debut performance and offered her a long term contract with the company beginning in January 1970 with the role of Pamina in Mozart's "The Magic Flute".She remained on the Met roster for the next 14 seasons, portraying such roles as Countess Almaviva in Mozart's "The Marriage of Figaro", Amelia in Verdi's "Un ballo in maschera", Cio-Cio-San in "Madama Butterfly", Desdemona in Verdi's "Otello", Elisabeth in Wagner's "Tannhäuser", Elsa in his "Lohengrin", Fiordiligi in Mozart's "Così fan tutte", Leonora in Verdi's "Il trovatore", Liù in Puccini's "Turandot", Marguerite in Gounod's "Faust", Mimì in Puccini's "La bohème", Octavian, Tatiana in Tchaikovsky's "Eugene Onegin", Violetta, and the title roles in Cilea's "Adriana Lecouvreur", and Puccini's "Suor Angelica" and "Tosca".Her final and 233rd performance at the Met was in the title role of Puccini's "Manon Lescaut" on March 31, 1984 with Vasile Moldoveanu as Des Grieux, Allan Monk as Lescaut, and Nello Santi conducting.