Viorica Ursuleac

[This quote needs a citation] She sang in the world premieres of four of his operas: Arabella (1933), Friedenstag (which was dedicated to Ursuleac and Krauss, 1938), Capriccio (1942), and the public dress-rehearsal of Die Liebe der Danae (1944).

She appeared at the Salzburg Festival (1930–1934 and 1942–1943) and in one season at Covent Garden (1934) where she sang in the first performances in England of Jaromír Weinberger's Schwanda the Bagpiper and Arabella (her favorite role).

Also in her repertory were the Countess Almaviva (The Marriage of Figaro), Donna Elvira (Don Giovanni), Leonore (Fidelio), Senta (Der fliegende Holländer, with Hans Hotter), Amelia Grimaldi (Simon Boccanegra), Amelia (Un ballo in maschera), Leonora (La forza del destino), Élisabeth de Valois (Don Carlos), Tosca, Minnie (La fanciulla del West), Suor Angelica (opposite Luise Willer), Turandot (opposite Erna Berger's Liù), Der Rosenkavalier, Ariadne auf Naxos (first as the Composer, then as Ariadne), Die ägyptische Helena, etc.

The soprano recorded for Deutsche Grammophon in 1933, 1936, and 1943, with excerpts from Arabella, Le nozze di Figaro, Tosca, Turandot, Der Rosenkavalier, Il trovatore, and Capriccio, as well as two Lieder of Strauss.

Krauss gave cover to their smuggling operation and Munich Opera House shows were arranged around the times and cities that the Cooks needed to make contact with escapees.