She appeared in world premieres, including Gottfried von Einem's Jesu Hochzeit, Luciano Berio's Un re in ascolto and York Höller's Der Meister und Margarita.

She first appeared there on October 2, 1966, as one of the servants in Die Frau ohne Schatten by Richard Strauss, conducted by Karl Böhm, alongside Leonie Rysanek and Christa Ludwig.

[8] Preferable contracts emanated from the New York City Opera, and she made her first appearance with that company as the Reine de Chémakhâ in Rimsky-Korsakov's Le coq d'or (with Michael Devlin) in 1969.

[13] She performed also in Vienna, Paris, at The Royal Opera House (as Berg's Lulu, which Robert Craft described as "accurately sung and perfectly enacted"[14]), Los Angeles, and at the Bolshoi Theatre in Moscow.

[2] She also performed in Douglas Moore's The Ballad of Baby Doe, Robert Ward's The Crucible, Carlisle Floyd's Susannah, Offenbach's Les contes d'Hoffmann (as Giulietta, opposite Norman Treigle), Bartók's Bluebeard's Castle, Poulenc's La voix humaine, Debussy's Pelléas et Mélisande, Berg's Wozzeck, Der Rosenkavalier by Richard Strauss, Les Troyens by Berlioz (as Cassandre), Korngold's Die tote Stadt, Wagner's Parsifal, Krenek's Karl V., Schoenberg's Erwartung, Wagner's Die Walküre (as Sieglinde), Janáček's Katya Kabanova and The Makropulos Case, Marcel Landowski's Montségur, Die Frau ohne Schatten (as the Färberin), Shostakovitch's Lady Macbeth of Mtsensk, Henze's The Bassarids, Beethoven's Fidelio, Hindemith's Mathis der Maler (as Ursula), Wagner's Tannhäuser (as Venus, with René Kollo in the title role) and Poulenc's Dialogues des Carmélites (as Mother Marie of the Incarnation).

[2] Later roles included the Widow Begbick in Weill's Aufstieg und Fall der Stadt Mahagonny at the Deutsche Oper Berlin, Teatro Carlo Felice, Bern Theatre, Theater Erfurt,[16] Herodias in Salome at Antikenfestspiele Trier and Canadian Opera Company, Kabanicha in Katja Kabanowa at Israeli Opera and Teatro La Fenice, Kostelnička in Jenůfa at Komische Oper Berlin, Klytämnestra in Elektra at Teatro dell'Opera di Roma, Théâtre du Capitole and New National Theatre, Tokyo, Mrs Quickly in Verdi's Falstaff at New National Theatre, Tokyo, Mme Larine in Tchaikovsky's Eugene Onegin at the Deutsche Oper Berlin in a Friedrich production,[13] the Old Lady in Bernstein's Candide at the Flanders Opera,[17] the Queen of Hearts in Unsuk Chin's Alice in Wonderland in Geneva,[17] and Cecily 'Cissy' Robson in Ronald Harwood's play Quartet in Berlin.