Collectif musical de rock progressif comprenant entre autres Billy Sherwood, Rick Wakeman, Steve Stevens, Chris Squire, Peter Banks, Steve Morse, Larry Fast, Alan Parsons, Sonja Kristina, Jordan Rudess, Steve Hillage, John Wesley, Nik Turner, Geoff Downes, Roye Albrighton, Gary Green, Tony Kaye, Colin Moulding, Mel Collins, John Wetton, Derek Sherinian, Billy Sherwood, Fee Waybill, Patrick Moraz, Jim Cuomo, William Shatner.