Lois McDonall from the Seraglio" by Mozart. In following seasons she performed Fiordiligi from "Così fan tutte", the Countess in "Le nozze di Figaro", Roselinda in "Die Fledermaus", Antonia in "The Tales of Hoffmann", Leonora in "Il trovatore", Freia in "Das Rheingold", Hanna in "The Merry Widow", the title role in Massenet's "Manon", Marschallin in "Der Rosenkavalier", Violetta in "La traviata", Miss Jessel in "The Turn of the Screw" and she created the title role in Iain Hamilton's "Anna Karenina". Lois McDonall spent 14 years as a resident artist with the English National Opera. In addition to her tenure at the ENO,
Jean Fenn theatre program which was run by renowned Russian tenor Vladimir Rosing. Fenn also studied privately with Amelita Galli-Curci and her husband Homer Samuels in California. She later received vocal coaching from Sigmund Romberg and Erich Korngold. In 1949, while still a student, Fenn sang in her first opera with the Hollywood Reading Club portraying Blondchen in "The Abduction from the Seraglio" and that same year appeared in productions with the Guild Opera Company of Southern California. She made her debut with the San Francisco Opera on October 10, 1952 as Musetta in Giacomo Puccini's "La Bohème" with Bidu Sayão as