Summer Rain is Vol 4 of our famous Sleep Improvement System. Relaxing, dreamy and designed to move you effortlessly through your nocturnal Circadian Rhythms. There is more here than meets the ear as it's the result of over 2 years of our research and testing into Binaural Tones and Frequencies and Brainwave Entrainment Technology. This will make you feel like it's a wonderful, dreamy, restful night of gentle Summer Rain. Do not use while driving or operating any machinery that could pose a danger to you. While this product has been tested to the best of our abilities, results may vary. Summer Rain is 90 minutes long and contains Brainwave Entrainment and Binaural Beats,Tones and Frequencies. It can be played in a continuous loop during your night of wonderful sleep. Effectiveness actually increases with subsequent usage, as your brain develops a conditioned response to the selection. My clients have reported great improvements when using Summer Rain as a Drugless Sleeping Aid. Why wake us with a drug hangover when you can enjoy a safe, effective alternative ? Join with the many who have abandoned prescription or over the counter sleep aids and enjoy the wonderful experience of a nice, comforting, relaxing Summer Rain. Headphones or earbuds may enhance your experience, but are not absolutely necessary. Many clients report success from different devices, set ups, volumes and acoustical arrangements.