He appeared internationally , such as 1980 in New York 's Carnegie Hall , in 1981 at the Vienna State Opera and the Metropolitan Opera in New York . Jung and the rest of the cast received the Grammy Award for Best Opera Recording for their recording of the Jahrhundertring conducted by Pierre Boulez , as Siegfried in both '' Siegfried '' and '' Götterdämmerung '' at the 25th Annual Grammy Awards . He was one of few singers who performed all tenor parts in '' Der Ring des Nibelungen ''
25th Annual Grammy Awards
25th Annual Grammy Awards
Manfred Jung