Wiosną 2011 dołączył do założonej przez Michaela Kiske grupy Unisonic.
Dyskografia Helloween Helloween (EP, 1985) Walls of Jericho (1985) Keeper of the Seven Keys Part 1 (1987) Keeper of the Seven Keys Part 2 (1988) Live in the UK – album koncertowy (1989)
Iron Savior Iron Savior (1997) Unification (1998) Interlude (EP, 1999) Dark Assault (2001)
Gamma Ray Heading for Tomorrow (1990) Sigh No More (1991) Insanity and Genius (1993) Land of the Free (1995) Alive ’95 (1996) Somewhere Out in Space (1997) Powerplant (1999) Blast from the Past (2000) No World Order (2001) Skeletons in the Closet (2003) Majestic (2005) Land of the Free II (2007) To The Metal (2010) Empire Of The Undead (2014)
Unisonic Ignition (EP) (2012) Unisonic (2012) Light Of Dawn (2014)