Flash - Monday Morning Eyes
(And if that did get played, I should buy a lottery ticket.)
it would be a "small beginning".
Yeah, well, at nearly ten minutes that has an even more infinitesimal chance of being played.
Other prog rock suggestions would be Genesis (Watcher of the Skies) and Gentle Giant (River).
There are also lots of possible bust-outs from the 1972 releases by three little-known local
bands: New Riders of the Purple Sage, Jefferson Airplane, and the Grateful Dead.