She made her debut at the Metropolitan Opera in 1968, with "Carmen", and at La Scala in 1969 in "Samson and Dalila". Verrett's mezzo roles included Cassandra and Didon (Berlioz's "Les Troyens")-including the Met premiere, when she sang both roles in the same performance, Verdi's Ulrica, Amneris, Eboli, Azucena, Saint-Saëns' Dalila, Donizetti's Elisabetta I in "Maria Stuarda", Leonora in "La favorita", Christoph Willibald Gluck's Orpheus, and Rossini's Neocles ("L'assedio di Corinto") and Sinaide in" Moïse". Many of these roles were recorded, either professionally or privately.