Most so-called "progressive rock" was really progressive pop, but not this track, which does rock out and which has a great big guitar hook (you'll know it when you hear it), which resolves several different ways within the song, i.e. the band were creative. It kicks off the last of their big three LPs ("Jumbo" and "Rockpommel's Land" were the first two), and according to the liner notes was a concert favourite.