" Some people look like they sound better than they actually sound, because they look confident and have good posture," once musician, a veteran of many auditions, says. "Other people look awful when they play but sound great. Other people have that belabored look when they play, but you can't hear it in the sound. There is always this dissonance between what you see and hear" (p.251). "

― Malcolm Gladwell , Blink: The Power of Thinking Without Thinking