• Welcome to my Progressive Rock Knowledge Test. You may have discovered this music recently through current bands like Radiohead, The Mars Volta, or System of a Down who claim to be infulenced by Progressive Rock. Or you might still wear your faded "Dark Side of the Moon" T-shirt as you spin your original vinyl copy of "Close to the Edge" and contemplate cutting off your scraggly, graying ponytail. Either way, we're about to find out just how "Prog" you are! There are 24 questions total. I'll warn you now - the test gets progressively more difficult as you go. How appropriate! Good Luck!!