Instruct: Classify Amazon reviews into positive or negative sentiment
Query: This one is a keeper

I stumbled onto Amon Amarth a few years ago, and this is my favorite of their albums that I have found so far. I'm not a musician so I won't try to impress you with all the musical terms, I'll just tell you what I like and why. My favorite song on here is Gods of War Arise, it's such a great song. Not too fast, not too slow, awesome lyrics, very memorable. Other great songs on here are Cry of the Blackbirds, because it's such a great description of an ancient battle that you feel yourself getting swept up in it, and Prediction of Warfare. Also, I really like Under the Northern Star.. it's a slow song, but it's awesome. This song more than any others really gets across the mood and lets you imagine sailing along in a wooden Viking ship through a frigid ocean to do battle. I think that of their recent albums this one represents a high water mark that may not be matched for a while. Definitely worth the price of buying it.