Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A somewhat overlooked masterpiece

Because it essentially contains only three songs, "Animals" is not as popular as the other albums from Pink Floyd's heyday. But it is a classic almost on par with "Dark Side of the Moon" and "The Wall." The lengthy instrumentals are never boring and the dark, cynical lyrics by Roger Waters achieve a kind of demented poetry. Downcast music simply doesn't get any better than this.