From his early work with the pioneering Krautrock band Cluster to his later solo recordings, Dieter Moebius remained one of the most innovative and prolific voices in contemporary electronic music, anticipating movements from ambient to techno years before the fact. By day a student at Berlin's Akademie Grafik, Moebius was moonlighting as a cook at an area restaurant when in 1969 he was befriended by Conrad Schnitzler, a key figure in local avant-garde circles, and invited to join Kluster, a band Schnitzler was forming with fellow underground artist Hans Joachim Roedelius. The trio released their debut LP Klopfzeichen in 1970; in the wake of their third album, 1971's Kluster und Eruption, Schnitzler exited to pursue a solo career, and Moebius and Roedelius continued on as a duo, modifying the name to Cluster.