Professor Benjamin Zander, Founder and Conductor of Boston Philharmonic Orchestra:

"You are all going to get an "A"! Part of you getting that "A" will be that in the next 2 weeks you write me a comprehensive letter. You will imagine yourself having just graduated with a first-class degree in Creative Musicianship and you will write in that letter why it was you were given an "A"; how many hours practice you put in; what your goals were and how you achieved them.; what mistakes you made and how you corrected them; what advice you took and how you applied it; what major lessons-for-life you learnt along the way; and how you are further going to advance your studies and career now that you have your first-class degree."

http://www.benjaminzander.com/teacher/