It varies as widely as the individuals vary. But the quality of their work is not comparable to the work of anyone else on the planet. It is precisely that individuality that attracts me to teaching; cultivating that quality is my purpose in teaching. Confident expression of that individuality constitutes mastery.
The other day the mother of that former student informed me that her daughter had played the piano a lot after that afternoon. I don't think it is an accident. Learning to listen is the hardest part of studying music, just as learning to see has to be the hard part of being a painter.
When she was a student, before she went away to college, she wrote a statement that shows she was aware of this:
""I took piano lessons from Nancy for twelve years, and over the years I learned much more than how to look at little dots on a piece of paper and press a corresponding lever.