Angelic demon. Two musical instruments rise above all others in their humanity — the violin, because it comes closest to imitating the singing voice, and the piano, because it comes closest to conveying human nature. As human nature is vast, so is pianism. You can sequester yourself from territory that is too hot, cold, angry, lustful, domineering, or terrifying. Some pianists base their whole career on safely walling off the troubling aspects of human perversity (Alfred Brendel comes to mind, with his ability to make even Liszt wipe off his shoes at the door), while only one has been courageous enough to venture without a care into heaven and hell.