 His concert repertoire ranges from Mozart to Penderecki, and from Beethoven to Mahler.He debuted in 1976 at the Vienna State Opera as Ferrando ("Il trovatore").From there he went on to sing Colline ("La bohème"), Pimen ("Boris Godunov"), Grand Inquisitor ("Don Carlo"), Commendatore ("Don Giovanni"), Osmin ("Die Entführung aus dem Serail"), Rocco ("Fidelio"), Daland ("The Flying Dutchman"), Roger ("Jérusalem"), King Henry ("Lohengrin"), Raimondo ("Lucia di Lammermoor"), Geronte ("Manon Lescaut"), Talbot ("Maria Stuarda"), Veit Pogner ("Die Meistersinger von Nürnberg"), Bartolo ("The Barber of Seville"), Titurel and Gurnemanz ("Parsifal"), Sparafucile ("Rigoletto"), Fasolt ("Das Rheingold"), Hunding ("Die Walküre"), Fafner ("Siegfried"), Hagen ("Götterdämmerung"), Ochs ("Der Rosenkavalier") Morosus ("Die schweigsame Frau"), Landgraf ("Tannhäuser"), Claggart ("Billy Budd") and Sarastro ("The Magic Flute").