 After one year with the New York City Opera, he left for Europe in 1960, where he was engaged at the Zurich Opera where in 1961 he sang Kostandis in the world premiere of Martinů's "The Greek Passion".In 1963, he began a long association with the Vienna State Opera, and made his debut at the Royal Opera House in 1964, as "Billy Budd".He made his debut at the Paris Opéra in 1973, and became the same year a permanent guest at the Deutsche Oper Berlin.