Instruct: Classify Amazon reviews into positive or negative sentiment
Query: The Greatest Pink Floyd Album

This is still my favorite Pink Floyd album followed by Wish You Were Here and The Wall. However I never cared for Clare Torry's "Vocals" on "The Great Gig In the Sky" and "Us and Them" is little too slow.One of the reasons I love this album is because unlike many other Pink Floyd albums there are no songs over ten minutes. Another is the use of sound effects such as chiming clocks, cash registers, maniacal laughter, and heartbeats. Added to this is their brilliant use of synthesizers. The Dark Side of the Moon also features great lyrics all written by Roger Waters.This is truly the first (and arguably the last) of Pink Floyd's great albums. After Dark Side they had other good albums such as Wish You Were Here,the Wall, and the Divison Bell, but I think they don't come close to Dark Side of the Moon.