Line-up. In the late 60s and early 70s, Tangerine Dream existed as several short-lived incarnations, all of which included Froese, who teamed up with several musicians from West Berlin's underground music scene, including Steve Jolliffe, Klaus Schulze, and Conrad Schnitzler.
Schmoelling left in 1988, to be replaced by the classically trained Paul Haslinger and (for a brief time) Ralf Wadephul. Optical Race, released in 1988, was the first Tangerine Dream album to appear on old bandmate Peter Baumann's Private Music label.
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