| Artist name | Roles | Recordings |
|---|---|---|
| 3 Feet Smaller | producer | Alone in the Dark |
| Gerhard Vellusig | producer, recording | Alone in the Dark |
| Rainer Spänle | recording | Alone in the Dark |
| Artist name | Roles | Recordings |
|---|---|---|
| The Saints | performer, percussion | Blind, Fire in Reflection, Hit the Moon, Jihad, One True Way, The Calling |