Hans Peter Katzenburg
 | Grave Digger - 25 To Live (2005) Keyboards |
 | Grave Digger: Tunes of Wacken - Live (2002) Keyboards |
| | Grave Digger - 25 To Live (2005) Keyboards |
| | Grave Digger: Tunes of Wacken - Live (2002) Keyboards |