Instruct: Classify Amazon reviews into positive or negative sentiment
Query: an absolute must for any fan of music

I've owned this book for a long time, and it's brilliant. The commentary is dead-on (at last, someone else thinks Billy Joel is HORRIBLY over-rated). It also explains WHY great artists such as David Bowie and Paul McCartney have put out so much [junk]. It pulls no punches, I love it. It also itroduced me to the wonderful world of the Shaggs. I can't say enough about it, so I'll stop. Just buy it.