Joshua Bell play in a subway station

The Washington Post published an article about an experiment they did: they had Joshua Bell, one of the best violinists in the world, to play incognito outside a D.C. Metro subway station. They wanted to see if without the PR, anybody would stop to listen, and notice the masterful play. The musician did not play popular tunes whose familiarity alone might have drawn interest. He played masterpieces in a good acoustical environment.
The result was? hardly anybody stopped to listen. People tossed him $32.17 for his 43 minutes of playing.