Instruct: Classify Amazon reviews into positive or negative sentiment
Query: A darn good book.

I've run sound at church and play in a Christian rock band, but I never quite grasped the concepts of sound design and how the equipment works until I read this book. I may not be able to walk into Carnegie hall and EQ the room as well as a seasoned pro, but I understand the basics: how Ohm's law works and why it's important, what channel inserts do, and why sometimes there's a fourth dial on a 3-band EQ. White has a good sense of humor and kept me laughing through most of the book. That's more than I can say about most technical manuals.