Dieter Mobius (Kluster 1969-1971) and Konrad "Conny" Plank (sound engineer for both Kluster's early albums) were members of Cluster and met during the earlier Kluster album sessions. This 1981 collaboration was their 2nd album (Originally released on German label Sky Records in 1981) and featured driving electronic rhythms on most of the tracks. Conny Plank was also a well-known producer who died in 1987 of cancer.