Empires of Eden • Architect of Hope 2015 MelodicRock Records (Track 3 only)
Empires of Eden Channeling the Infinite (Track 6 Only, Guest Solo, "Cyborg") Music Buy Mail 2012
Voz • Shadows of Death Music Buy Mail 2012
Jon Oliva's Pain Maniacal Renderings AFM 2006
Jon Oliva's Pain Straight Jacket Memoirs (EP) AFM 2006
Millenium The Best Of... And More Frontiers 2005
Millenium • Jericho Metal Heaven 2004
Teer • Bullets and Beer Independent Demo 2004
Armageddon Over Wacken 2003 (Track 11, Disc 2 only) Crash Music 2004
Millenium • Hourglass Frontiers 2000
Jorn • Starfire (Track 3 only) Frontiers 2000
Millenium • Angelfire Frontiers 1999
Teer S/T • (Blue CD) Frontiers 2000
Teer • S/T Independent 1996