Artist
솔로 · 1968-01-13 – 현재
이 아티스트가 연주·작곡·프로듀싱 등으로 참여한 곡과 앨범
Close My Heart
Second Decay
Monochromes · 1988
Poisoned Water
The Emerge
Musik Macht Schön! - Live (Zwischenfall 1999) · 2002
Land unter
Medea Twin
Lauf der Zeit
Rituals (Reduce remix by A. Sippel of Second Decay)
Bastards of Love
Rituals · 2005
Lohn und Brot
Held der Arbeit
2012