In order to achieve efficiency, I try to question and optimize everything I can. And music is not an exception. The problem is that everyone is constantly using it, so it’s difficult to think objectively about the topic. I have attempted everything. I have tested the effect of several genres, sometimes only one, sometimes a mix of them. Even for long periods of time, I didn’t listen anything at all. After studying behaviourism and my last experiencies, I expose in this article what I think the best use of music is.