(Wolf Trap Opera, Virginia Opera, Michigan Opera Theatre, ( Staatstheater Karlsruhe, Landesbühnen Sachsen) (Metropolitan Opera, Wien Staatsoper, Royal Opera House, Paris Opera, Teatro alla Scala, San Francisco Opera, Washington National Opera, Bayerische Staatsoper) (Deutsche Oper Berlin, Theater Basel, Minnesota Opera, Staatsoper Hamburg, Chautauqua Opera) (Deutsche Oper Berlin, Staatsoper Unter den Linden, Oper Frankfurt, San Diego Opera, Oper Dortmund, Oper Köln, Berlin Philharmonic) ( Teatro alla Scala, Salzburger Festspiele, Glyndebourne, Staatsoper Unter den Linden, Paris Opera, San Francisco Opera, Houston Grand Opera, Los Angeles Opera, Bolshoi Theater, Grand Théâtre de Genève, London Symphony Orchestra, BBC Proms) (San Francisco Opera Center & Merola Program Director, Metropolitan Opera, Lyric Opera of Chicago, La Fenice, Bavarian State Opera, Théâtre du Châtelet, Welsh National Opera, Seattle Opera, Houston Grand Opera, Los Angeles Opera)
(Deutsche Oper Berlin, Hessisches Staatstheater Wiesbaden, Salzburg Easter Festival, Opernhaus Graz, Israeli Opera) (Deutsche Oper Berlin, Glyndebourne, English National Opera, Royal Opera House ) (Deutsche Oper Berlin, Metropolitan Opera, San Francisco Opera, Los Angeles Opera, Semperoper Dresden, Chicago Symphony Orchestra ) (Staatsoper Unter den Linden, Deutsche Oper am Rhein, Staatstheater Mainz, Oper Leipzig, Staatsoper Hannover, Staatsoper Hamburg, Garsington Opera) (Metropolitan Opera, Royal Opera House, Deutsche Oper Berlin, Téatro Colón, Chicago Lyric Opera, San Francisco Opera, Washington Opera,
(Metropolitan Opera, Paris Opera, Teatro alla Scala, Royal Opera House, Chicago Lyric Opera, Gran Teatro del Liceo, Salzburger Festspiele)