This album documents the final Kluster concert at Göttingen Universitat in May 1971. It exists with various credits... The first self-released issue (with white stamped labels) credited the four protagonists: Schnitzler - Roedelius - Moebius - Freudigmann listed, followed by the words Kluster and Eruption, and had no track titles. The 1974 Edition Block issue (also included in the Conrad Schnitzler "Work In Progress" box set) only included the credit of Conrad Schnitzler and track titles "Eruption 1" and "Eruption 2", and no mention of Kluster at all. After the issue of Conrad Schnitzler solos with similar plain card covers in red and blue, Conrad Schitlzer started to list these releases as "Schwarz", "Rot" and "Blau". Various CD issues since have messed-up the credits even further, and despite the Eruption credit on this it is not to be confused with the self-titled release by the band Eruption released on Qbico.