Jazz is not background music. You must concentrate upon it in order to get the most of it. You must absorb most of it. The harmonies within the music can relax, soothe and uplift the mind when you concentrate upon and absorb it. Jazz music stimulates the minds and uplifts the souls of those who play it was well as of those who listen to immerse themselves in it. As the mind is stimulated and the soul uplifted, this is eventually reflected in the body.