After five years as an ensemble member at the Theater Koblenz, he has worked as a free-lance singer based in Vienna since 1997, appearing at major opera houses and festivals internationally, often together with his brother Peter Edelmann, also a baritone.

Focused on Mozart roles such as Don Giovanni and Papageno, he also appeared at the Schwetzingen Festival in the world premiere of Salvatore Sciarrino's Luci mie traditrici.

[8] He has made guest appearances at the Teatro Real in Madrid (as Papageno), at the Komische Oper Berlin (as Prince Ottokar in Der Freischütz) and at La Monnaie in Brussels (1999, as Doctor Malatesta in Don Pasquale).

He has also made guest appearances at the Oper Frankfurt (as Guglielmo), at the Theater St. Gallen, (December 2008, debut as Danilo in The Merry Widow), at the Stadttheater Bern and at the Staatsoper Stuttgart (2010/11 season as Eisenstein).

[9] Vita (Website of the Staatstheater Stuttgart; retrieved 5 August 2021) In 2012, he appeared at the Opéra national du Rhin as Papageno in Die Zauberflöte; in 2013 and 2014, he also sang this role at the Bregenz Festival.