Симплициссимус
He made his operatic debut at the Deutsche Oper am Rhein in Düsseldorf in 1929, where he sang for ten years and where he took part in the premiere of Ludwig Maurick's work "Simplicius Simplicissimus", on 23 March 1938. He joined the Vienna State Opera in 1940, where he sang until the end of his career. He also became a regular guest at the Salzburg Festival and the Glyndebourne Festival, where he was especially admired for his Mozart singing. He made guest appearances at La Scala in Milan, the Royal Opera House in London. the Palais Garnier in Paris and other major European stages.