Instruct: Classify an Amazon review as either positive or negative.
Query: A book well worth purchasing.

I think Paranoid: Black Days with Sabbath and Other Horror Stories is a really fascinating book as it chronicles Mick Wall's experiences in meeting and working alongside the members of Black Sabbath as well as Phil Lynnot of Thin Lizzy, Judas Priest and other rock stars. I mean just read the part where Mick remembers asking Phil as to why he liked to hold his bass guitar so high. Phil's response just cracked me up. So readers if you're a fan of heavy music and especially the above mentioned, go out and buy this book.