After establishing himself as an acoustical consultant, Peter Klaveness decided to become an opera singer. As a fulltime performer in Augsburg, he performed Fafner, Hunding, and Hagen in the Ring, Figaro (Nozze), Zaccaria (Nabucco), and Truffaldino (Ariadne auf Naxos). In January 2000, the bass will take a new position at the Staatstheater in Darmstadt, where he will sing K?nig Marke in Tristan, among other roles.