In this paper, the author concludes that the lesson for music educators is that every musical experience that is offered to students affects their brains, bodies, and feelings. In short, it changes their minds permanently, and, if educators are conscientious, it does so progressively. Such a process is called "learning." That capacity to learn, to grow and develop, occurs with everything else that humans experience in their lives, of course, because of the brain's plasticity--its enormous power to change itself in response to whatever life's experiences present to it. The function of music education is, precisely, to foster musical learning--the changes that occur in brain, body, and feeling as musical experience becomes more deeply discriminative and more widely situated or, that is, more musically intelligent.