[2] She made guest appearances in 1934 in Amsterdam, at the Teatro Colón in Buenos Aires and in Die Walküre at the opera in Rio de Janeiro.
There she was involved in two world premieres – on 12 May 1941 in Winfried Zillig's Windsbraut and on 1 November 1942 in Franz Petyrek's Garden of Paradise.
[3] During World War II, she sang at the Bayreuth Festivals (Waltraute and First Norn in Götterdämmerung and Magdalene in Die Meistersinger von Nürnberg), as well as a Carmen guest appearance in 1944 at the Vienna Volksoper.
Guest appearances took her to Berlin, Brussels and Amsterdam as well as to the Teatro Nacional de São Carlos of Lisbon.
[2] Her repertoire included Wager's Ortrud in Lohengrin and Kundry in Parsifal, Verdi's Eboli in Don Carlos and Amneris in Aida, Strauss roles including Octavian in Der Rosenkavalier, the Nurse in Die Frau ohne Schatten, Herodias in Salome and Klytämnestra in Elektra, as well as Silla in Pfitzner's Palestrina.