Limited vinyl LP pressing. Digitally remastered and expanded edition of this 1980 ambient/experimental classic featuring two bonus tracks plus digital download containing two additional bonus tracks. Includes four-page insert. Following the RVNG reissues of A Period Of Review and Artificial Dance, Closed System Potentials, recorded in 1979 and originally released in 1980, finds it's way back to vinyl in a completely remastered and expanded edition. The LP includes two previously unreleased tracks, and the download card includes an additional two unreleased tracks, all taken from the original Closed System Potentials sessions. In their review of A Period of Review, Pitchfork said, "These pieces most closely evoke the work of Roedelius and Moebius in Cluster: meditative, wistful, lovely, giving off gentle glimmers of light. In trying to think if the closest American corollary for this set, the possibility emerges that Kerry Leimer is one of the lone examples of American kosmische music, that elegant hybrid that falls somewhere between the Velvets-style mesmerism of Can in the early '70s and the placid tones of new age music that arose in the next decade. It's a sound that applies to mid-'70s Cluster, Ash Ra Tempel, Popul Vuh, the second side of Kraftwerk's Autobahn, and others." K. Leimer founded the Palace of Lights label in 1979. Leimer's early work was reissued by Autumn and RVNG in 2014 and 2015, and his early cassette work is in the critically acclaimed Vinyl On Demand box set American Cassette Culture. He has been actively producing music since the mid-1970s - his current catalog includes 16 still-in-print albums plus two collaborative albums with Marc Barreca.