He also has sung non-Wagnerian roles, including Hermann in Tchaikovsky's "The Queen of Spades", Florestan in "Fidelio", Britten's "Peter Grimes", and Verdi's "Otello". In fact, he has an unusually wide repertoire for a "Heldentenor". Other tenor roles he sang were that of Count Danilo, in Herbert von Karajan's 1972–1973 recording of Franz Lehár's operetta "The Merry Widow", with Elizabeth Harwood and Teresa Stratas, and Prince Edwin in the 1971 film of Emmerich Kálmán's operetta "Die Csárdásfürstin" with Anna Moffo and Dagmar Koller.