Music, because of its specific and Jar-reaching metaphorical powers, can name the unnameable and communicate the unknowable.
Leonard Bernstein, composer

If you really want to change your brain waves, a good place to start is with a song. Consider for a moment the effect music has had on you in the past. I’m sure you have experienced your mood suddenly lifting when you hear a cheerful song on the radio. Perhaps the songs of your youth have the power to transport you back to a simpler place in time. Or maybe you have even been moved to tears by a grand symphony. You may have even noticed that music can have an effect on your body. Unconsciously your foot begins tapping or your head bobs up and down in time to the rhythm. Occasionally, at some moment when you feel unrestrained by the need to retain personal decorum, you let loose and start dancing around the room.