In Wagner's cycle Der Ring des Nibelungen, Koch notably appeared as Wotan at the Bayreuth Festival in 2013.

At the Vienna State Opera, Koch sang in addition to Hans Sachs also Kothner in Die Meistersinger von Nürnberg and Telramund in Lohengrin.

[2] Wolfgang Koch has also found success with leading roles from other composers, such as the title role in Busoni's Doctor Faust (Munich 2008) and the cardinal legate Morone and the cardinal Borromeo in Pfitzner's Palestrina (Munich 2009 / Hamburg 2011 / Frankfurt 2010 under Kirill Petrenko).

[4] Following this award, the Bavarian State Opera commissioned artist Christoph Brech to create a video in which Koch appears in seven operatic roles: Wotan, Don Pizarro, Sir John Falstaff, Alberich, Jochanaan, Carlo Borromeo and finally Don Giovanni.

In a review of this art exhibition for Main Post, Katharina Winterhalter described Koch as appearing vulnerable under masks of drama and masculinity.