From February to May of 1973 Rolf-Ulrich Kaiser organized a series of psychedelic jam sessions at Studio Dierks. Apparently the musicians were all high on drugs and didn't even notice they were being recorded (at least in the case of Klaus Schulze). In any case, the following year Kaise and Gille Lettmann assembled three LPs worth of material to release from these sessions which have been cosmic classics, though largely disowned by the musicians involved.