Kluster renamed itself as Cluster following the departure of Conrad Schnitzler in 1971.
Cluster was a German experimental musical group consisting of Hans-Joachim Roedelius and Dieter Moebius. They have recorded albums in a wide variety of styles ranging from experimental music to progressive rock and have influenced the development of contemporary popular electronic and ambient music. Cluster was active from 1971 until 2010, releasing a total of 15 albums, including two collaborations with Brian Eno. Musician, writer and rock historian Julian Cope places three Cluster albums in his Krautrock Top 50 and "The Wire" places Cluster's debut album "Cluster '71" in their "One Hundred Records That Set The World On Fire".
After a decade long hiatus Cluster reunited in April, 2007. They performed at the opening of documenta 12, a major exhibition of modern and contemporary art held every five years in Kassel, Germany on June 15, 2007. In late 2007 Cluster performed at concerts across Europe and played the United States in 2008 for the first time since 1996.
Cluster disbanded at the end of 2010. Their final concert was on December 5 of that year. In 2011, Roedelius recruited Onnen Bock to reactivate Cluster under the name of "Qluster". Their debut release came in the form of a trilogy entitled Rufen - Fragen - Antworten (Calling - Questioning - Responding), containing a piano record, a live documentary and a normal record. In January 2013, Qluster released their fourth record Lauschen (Eavesdropping), a live record with world musician Armin Metz.