I kinda skeptical with this Binaural Beats. I just play it and ignore it while doing my work. And after few minutes I feel kinda itchy inside my lung. LOL. And this, is my favorite beat, I keep playing it everythime i need to finish some work. I feel focus, relax, with positive mind. And time move fast. http://www.youtube.com/watch?v=YkNhG6bERLA I also installed some Binaural Beats app on my phone. Keep playing it 5 minutes before sleep. And it instant zip my "chatty" mind, and turn out to be zzzzZZZZZZzzzz.. Cool!