Gradually becoming one of the great new leaders in brain & mind technology is brainwave entrainment. Doctors in the fields of medical science, psychology, neurology, sound therapy, hypnotherapy, etc. are experiencing the effectiveness of brainwave entrainment in their work with their clients. Two of the more popular forms of brainwave entrainment are known as 1. binaural beats, and 2. isochronic tones. Those who have experienced the effectiveness of isochronic tones and binaural beats testify that the physical, mental, emotional and spiritual benefits of listening to binaural beats or isochronic tones are similar to the benefits one receives after years of meditation practice.