Kluster (1969) metamorphosed into Cluster (1971) and Cluster became Qluster (2011). In a period spanning over 40 years, Hans-Joachim Roedelius was a driving force behind this unique transformation. Now, as Qluster, he has recorded together with Onnen Bock in the latest incarnation. Three albums already released document the current status of their musical journey to pastures new. "Lauschen" is not a studio album, but a live recording of a performance for which Roedelius and Bock invited world musician Armin Metz to join them on stage. Although Qluster sound completely different to Kluster or Cluster, one thing remains unchanged: the art of improvisation. Where or when better could the listener experience this than at a concert?