There is more than one artist with this name. 1. legendary obscure ambient/experimental "krautrock" duo of the early 80's in similar realms to Cluster and Harmonia. Buschi B. Buchweitz & Mike Bohrmann made 3 albums under this name ( Circles [1983] / More Circles [1984] / The Third Cycle [1987] ) on own independent label Einhorn Music as well as their parallel project D.O.C. aka Das Organisierte Chaos. 2. Circles - Australian metallers mixing up cutting edge production techniques with some altogether killer guitar work