Brain was a Hamburg-based record label prominent in the 1970s releasing several important Krautrock records by bands such as Neu!, Cluster and Guru Guru. Many of its more prominent records are currently being reissued on CD by Repertoire Records.In the middle of 1971, Rolf-Ulrich Kaiser's management style at Ohr caused two of his A&R men, Bruno Wendel and Günter Körber, to leave Ohr and set up their own record company, which they called Brain.