There are two keys to playing music. First, one has to have the technical ability, learning the math, the reading of the notes, and the dexterity, or the ability of the hand and finger movements. Once the discipline and the technical ability is there, then there is the emotion. Now this is the key difference between many musicians: some have only one or the other, the technique being easier to develop, simply through discipline. But the greatest musicians are the ones who have developed the ability to channel their emotions through the deepest part of themselves, channeling it through their bodies, out their hands or their voices, and as the music then travels the air and is recieved by the listener, it then stirs up the deepest parts of them, making emotions alive, and lifting their spirit. THAT is music. That, is real music.