Instruct: Classify a given review into positive or negative sentiment.
Query: This book is OK ....

It's certainly about music publishing and being a music publisher. Lots of technical information which I didn't know already but perhaps much technical detail. Then again, maybe I should have bought a different book. I don't intend to be a music publisher. I'm a musician and would prefer to avoid this side of the business unless it's essential for me to get into it. I like making and playing music more than I like listening to that of others. Although I read the entire book I didn't enjoy it too much and I don't know how much of it I actually absorbed.