If we're talking about underrated music, why not overrated? Ever heard Hovanness' And God Created Great Whales...? It's the dumbest, most pretentious piece of crap I ever heard. The music itself is really bad, and the effects, most notably the recorded whale song, are supremely annoying. I also want to say many of Mozart's pieces are overrated. They can be fun to play, sometimes, but I get so agitated when I try to listen to them. I don't have the patience for his stuff I would for, say, Shostakovich or Beethoven.