In 1954, Borkh appeared in Rio de Janeiro; in the same year she performed at the Florence Maggio Musicale as Eglantine in Weber's Euryanthe, conducted by Carlo Maria Giulini, and in 1955 at the Salzburg Festival, as Cathleen in the premiere of Egk's Irische Legende.
In 1954, Borkh performed in Rio de Janeiro; she also appeared as Eglantine in Weber's Euryanthe at the Florence Maggio Musicale under Carlo Maria Giulini's direction that same year. In 1955, she was cast as Cathleen in Egk's Irische Legende for the Salzburg Festival premiere.