Among the parts that she assumed were the title role in La Périchole (San Francisco Opera, 1976; Geneva Opera, 1982 and 1983 ); Blanche in Dialogues des Carmélites (Metropolitan Opera, 1977, 1978, 1979, 1980, 1981 and 1987 ); Mélisande in Pelléas et Mélisande (La Scala, 1977; San Francisco Opera, 1979 ); Charlotte in Werther (San Francisco Opera, 1978 ); the Composer in Ariadne auf Naxos (Glyndebourne Festival Opera, 1981; Metropolitan Opera, 1984 and 1985 ); Susanna in Le nozze di Figaro (Geneva Opera, 1983; Lyric Opera of Chicago, 1987 ); Poppea in L'incoronazione di Poppea (Glyndebourne Festival Opera, 1984 and 1986 ); the title roles in Carmen (Glyndebourne Festival Opera, 1985 and 1987; Metropolitan Opera, 1986; Royal Opera House, 1991 ), Salome (Los Angeles Opera, 1986; Royal Opera House, 1988; Lyric Opera of Chicago, 1988; San Francisco Opera, 1993 ), Die lustige Witwe (Lyric Opera of Chicago, 1986 and 1987 ), Tosca (Royal Opera House, 1991 ) and Madama Butterfly (Los Angeles Opera, 1991 ); Didon in Les Troyens (Metropolitan Opera, 1993 and 1994 ); Katerina Ismailova in Lady Macbeth of Mtsensk (Metropolitan Opera, 1994 ); Dido in Dido and Aeneas (Hampton Court, 1995 ); Marie in Wozzeck (Metropolitan Opera, 1997 ); the title role in Fedora (Los Angeles Opera, 1997 ); and the Queen of the Fairies in Iolanthe (Gielgud Theatre, London, 2008 ).