Unlike their European contemporaries Hawkwind, Neu! Can, and Amon Düül II, the ever-evolving collective known as Gong were not nearly as well-known for their pioneering brand of psychedelic space rock with conceptual ideas that involved aliens and alternative realities. They were also among the first of these bands to embrace -- and welcome -- improvisation during the late '60s and '70s. Gong was so influential, several of its one- (or two-) time members enjoyed careers leading their own projects, including Gilli Smyth, Steve Hillage, Didier Malherbe, Allan Holdsworth, and Pip...