I remember a lesson many years ago, when my teacher told me that her job was to teach me how to teach myself. So that I would one day no longer need a teacher. I couldn’t have been more than 9 or 10 at the time, so the notion of me teaching myself was hard to fathom. It was difficult enough to just play in tune, never mind come up with my own bowings and fingerings, or making decisions about phrasing and all the musical details and nuances involved. Of course, she was right. One day I wouldn’...