Instruct: Classify Amazon reviews into positive or negative sentiment
Query: The best brainwave entrainment program

I have several of Dr. Thompson's CD programs, and this is BY FAR the best. These CDs are perfect for improving creativity, inner peace, mood, focus, stress levels and relaxation. Though I typically prefer instrumental brainwave entrainment CDs, the power of the spoken words and the way they are presented in this collection seem to be far more effective. These CDs have produced fantastic results in my life.