Progressive rock seems to have staged a comeback of sorts recently. One need look no further than Rush, who loaned their 1975 song "Fly by Night" for a current car commercial or that Yes still draws a good crowd even with a substitute singer recruited from a cover band. Likewise, those who caught Jethro Tull's Ian Anderson at the Fillmore recently can attest to the fact that even an album that's 40 years old -- in this case, Thick As A Brick -- can still sound as sturdy as ever.
A product of the late '60s and early '70s, Prog came into favor with the rise of underground radio and its intrusion into the realms of the once-dominant Top 40. This was due in no small part to the changing tastes of the listening populace who embraced new sounds and indulged in new chemical substances. Call it nostalgia or merely a renewed appreciation for those more sophisticated sounds, but it seems there's a revival.