Credits
- Helloween
- Just a Little Sign (Japan EP)
- 2003
- Main Performer
- Helloween
- Rabbit Don't Come Easy (Japan Bonus Track)
- 2003
- Main Performer
- Helloween
- Rabbit Don't Come Easy
- 2003
- Main Performer
- Helloween
- Just a Little (Germany CD)
- 2003
- Main Performer
- Helloween
- Treasure Chest (Box)
- 2002
- Main Performer, Producer, Remixing
- Helloween
- Treasure Chest (Japan Import)
- 2002
- Arranger, Producer
- Helloween
- Treasure Chest
- 2002
- Arranger
- Helloween
- Treasure Chest (Japan Import)
- 2002
- Remixing
- Helloween
- Treasure Chest
- 2002
- Remixing, Producer, Main Performer
- Helloween
- Master of the Rings (2001 Reissue)
- 2001
- Main Performer, Producer
- Various Artists
- Power of Metal/Symphonies of Steel
- 2001
- Performer
- Various Artists
- Metal Dreams, Vol. 3
- 2001
- Performer
- Various Artists
- Tribute to the Scorpions
- 2001
- Performer
- Helloween
- Mr. Torture
- 2000
- Main Performer, Producer
- Various Artists
- Death Is Just the Beginning, Vol. 6
- 2000
- Performer
- Various Artists
- Metal Dreams, Vol. 2
- 2000
- Performer
- Helloween
- Time of the Oath (Import Bonus Tracks)
- 2000
- Main Performer
- Helloween
- Pink Bubbles Go Ape (Japan Bonus Track)
- 1999
- Main Performer, Producer
- Helloween
- Metal Jukebox (Bonus Track)
- 1999
- Main Performer, Producer
- Various Artists
- Heavy Metal Thunder (Rhino)
- 1999
- Performer
- Helloween
- Metal Jukebox
- 1999
- Main Performer, Producer
- Karaoke
- Helloween Karaoke Remix, Vol. 1
- 1998
- Main Performer, Producer
- Karaoke
- Helloween Karaoke Remix, Vol. 2
- 1998
- Main Performer
- Helloween
- Pumpkin Box
- 1998
- Arranger, Group, Main Performer, Mixing, Producer
- Helloween
- Better Than Raw
- 1998
- Group, Vocals (Background), Producer, Main Performer
- Helloween
- High Live (Video/DVD)
- 1997
- Main Performer
- Various Artists
- Tribute to Judas Priest: Legends of Metal (1 CD)
- 1997
- Performer
- Various Artists
- Youth Gone Wild: Heavy Metal Hits of the '80s, Vol. 2
- 1996
- ?, Performer
- Helloween
- Time of the Oath
- 1996
- Main Performer
- Various Artists
- Finest of Hard-Rock, Vol. 2
- 1995
- Performer
- Helloween
- Mr. Ego (EP)
- 1994
- Main Performer
- Helloween
- Keeper of the Seven Keys, Pts. 1-2
- 1994
- Main Performer
- Helloween
- Keeper of the Seven Keys, Pts. 1-2 (Import)
- 1994
- Main Performer
- Helloween
- Master of the Rings
- 1994
- Main Performer
- Helloween
- Master of the Rings
- 1994
- Producer
- Helloween
- Best, the Rest, the Rare
- 1991
- Arranger, Main Performer
- Helloween
- Pink Bubbles Go Ape
- 1991
- Main Performer
- Helloween
- Keepers Live
- 1991
- Main Performer
- Helloween
- Best, the Rest, the Rare
- 1991
- Producer
- Helloween
- Live in the U.K.
- 1989
- Main Performer
- Helloween
- I Want Out: Live
- 1989
- Main Performer
- Helloween
- Keeper of the Seven Keys, Pt. 2
- 1988
- Arranger, Main Performer
- Helloween
- Helloween/Mini LP
- 1987
- Main Performer
- Helloween
- Keeper of the Seven Keys, Pt. 1
- 1987
- Main Performer, Arranger
- Helloween
- Walls of Jericho
- 1986
- Arranger, Main Performer, Producer
























Plus