Krautrock icons Cluster - the duo of Hans-Joachim Roedelius and the late Dieter Moebius - were part of the same extraordinary art and music scene centred around late-60's Berlin that produced Tangerine Dream, Ash Ra Tempel, Klaus Schulze, Conrad Schnitzler and many others. In these heady early days of the scene the anything-goes ethos was strong. Moebius and Roedelius were making music with found objects and electronics and experimenting wildly, performing long improvisations on stage and releasing a series of improvisational albums with Schnitzler under the name Kluster.