Instruct: Classify the given Amazon review as either positive or negative.
Query: It has to grow on you

I thought it was a little difficult to listen all the way through the first couple times. After a few listens I couldn't get enough, and its my favorite of about 12 Tull albums I own. A progressive rock staple. And even the live version rocks (serious shredding from Martin Barre). And it's a song you can say "I know all the words to it" and it actually means something.