Binaural beats stimulates your brain by sending special auditory artifacts directly into your headphones to produce subtle changes in behavior through higher brainwaves frequency.

* WHAT ARE BINAURAL BEATS?
The Binaural Beats were discovered in 1839 by Heinrich Wilhelm Dove, and earned greater public awareness in the late 20th century based on claims that binaural beats help induce relaxation, meditation, creativity and other desirable mental states. The effect on the brainwaves depends on the difference in frequencies of each tone, for example, if 300 Hz was played in one ear and 310 in the other, then the Binaural beat would have a frequency of 10 Hz.
You can find a more complete description on the dedicated wikipedia page (http://en.wikipedia.org/wiki/Binaural_beats).

* Binaural Beats Therapy
In this app you will find different types of tracks that can help you to sleep, meditate, concentrate , reduce some types of pain, develop your creativity and get rid of your stress.

It takes some time of practice and patience to really feel the effects.