I have used this "single song" recording for a year now. I use it for Yoga practice and it sets the mood when I'm getting ready for meditation. I previously described it as a sinusoidal wave pattern. It isn't like any other recordings I've heard. It's is a song but not by the usual definition. My i-Tunes play counter says it is the most played in my Yoga Music folder. Best listened to when your in a meditative mood or want to be in one. I reommend it.