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The major international opera houses she has sung in include the Deutsche Oper Berlin, the Deutsche Oper am Rhein, the Deutsche Staatsoper Berlin, the Nuremberg Opera, the Gulbenkian Auditorium in Lisbon, the Festwochen Herrenhausen in Hannover, the Schloß Sanssouci in Potsdam, the Kallang Theatre and Victoria Theatre in Singapore, the Festspielhaus in Baden Baden, and the Gran Teatre del Liceu in Barcelona.
Other performance credits include appearances at the Liceu (Isolde), Teatro Regio di Torino (Brünnhilde in Götterdämmerung), the San Francisco Opera (Brünnhilde in Die Walküre), Vienna State Opera (Isolde, Kostelnička), Deutsche Oper am Rhein, the Palacio de Bellas Artes, the Grand Théâtre de Genève, and the Canadian Opera Company.
Oliver von Dohnányi's operatic engagements include Carmen, La Gioconda, Hamlet and The Bartered Bride for Opera North, Falstaff and Mefistofele for English National Opera, Der Widerspenstigen Zähmung at the Wexford Festival, Aïda at the Deutsche Oper am Rhein, Düsseldorf, Il Barbiere di Siviglia and Il Turco in Italia at the State Opera in Prague.
Peter Gloystein is also active in various cultural institutions: Chairman of the Board of the Association supporting the Cultural Project Hombroich, Neuss; General Manager of the Urban Planning Corporation Raumortlabor Hombroich gemeinnützige Stiftungs GmbH, Neuss; Chairman of the Friends Association of the Teatro La Fenice, Berlin and Member of the Board of the Friends Association of the Deutsche Oper am Rhein, Düsseldorf/Duisburg.