He returned to Covent Garden in 1965 to sing Turiddu in Pietro Mascagni's Cavalleria rusticana and again in 1968 to portray the title hero in Verdi's Don Carlos. His debut at Vienna State Opera came in 1966 as Cavaradossi in Puccini's Tosca, and over the next 25 years he continued to appear there in more than 130 performances, including even the role of Froh in Richard Wagner's Rheingold. In 1970 he appeared as the tenor soloist in a production of Verdi's Requiem with the Chicago Symphony Orchestra.
He returned to Covent Garden in 1965 to sing Turiddu in Pietro Mascagni's Cavalleria rusticana and again in 1968 to portray the title hero in Verdi's Don Carlos. His debut at Vienna State Opera came in 1966 as Cavaradossi in Puccini's Tosca, and over the next 25 years he continued to appear there in more than 130 performances, including even the role of Froh in Richard Wagner's Rheingold. In 1970 he appeared as the tenor soloist in a production of Verdi's Requiem with the Chicago Symphony Orchestra.