Instruct: Classify the given Amazon review into positive or negative sentiment.
Query: Not much info here

I found myself going through this book at an increasingly rapid pace. As with everything Bill Harris says there is a very, very low, signal to noise ratio.The information in this book could be delivered in a well-written paragraph about what binaural beats do.I'm not be the person to write that paragaph but here's an attempt-Our brains are operating at 4 levels of frequency at varying degrees. Meditation can help focus you into one level but it is a long and painful process vs. listening to the CD, which can work without requiring mental attention. This meditative state helps you recognize and change the bad mental patterns which you developed in childhood to protect yourself.