The inspiring Yes/Squire thread led me to this. Not as sophisticated as Yes, more ELPish but it brings back good memories of when I was in a 3 piece band keys, drums, and little ol' me on my Spoiler with Taurus 2's, juno 106 and moog source, sunn 412 and 18 w bin powered by a Roadmaster head with more tubes than I can remember! 43 minute tunes man all composed no jam.

That does sound a lot like ELP.  I went to their website and read the bio; very interesting.