Slovakian bass Peter Kellner studied at the Universität Mozarteum Salzburg and at the University of the Arts in Graz. He performs regularly at Vienna State Opera, where his roles have included Figaro (Le nozze di Figaro, Leporello (Don Giovanni), Guglielmo (Così fan tutte), Papageno (The Magic Flute) and Don Basilio (Il barbiere di Siviglia). Other recent appearances include Colline (La bohème) at the Metropolitan Opera and Royal Opera House, Osmin (Die Entführung aus dem Serail) in Hamburg, Raimondo (Lucia di Lammermoor) at Semperoper Dresden, Vodník (Rusalka) in Prague and Figaro at Lyric Opera Chicago. Engagements for 2025/26 include Kecal in a new production of The Bartered Bride at Vienna State Opera, Don Alfaro (Il viaggio a Reims) at the Salzburg Festival, Frère Laurent (Roméo et Juliette) in Dresden and his debut as Daland (The Flying Dutchman) in Rouen. He has sung with orchestras including the Vienna Philharmonic, Concentus Musicus Vienna, Radio France and the Orchestra of the Age of Enlightenment.