One of them was in dire financial straits and his business was suffering. The brain uses waves and impulses to convey and process information. There are four kinds of brain waves, each with its own frequencies. More about that later Thinking patterns are imprinted on your brain from a young age through your experiences and how you react to them emotionally. The sounds are blended with sounds from Nature - such as the soft murmuring of the sea.
Beta activity is typical of a tense, awake state.
Alpha and Theta rhythm reflect a relaxed mind state, but simultaneously a higher awareness and sharpening of brain functions. Delta reflects a sleep state. The tape contains particular sound harmonies, which when listened to through stereo equipment, helps tune the brainwaves for relaxation, concentration, and creativity. There are no subliminal messages and it is not addictive. It is a safe technique where the listener remains in control.