One of the worlds best violin players once stood at a subway station in New York and played for an hour. In spite of having sold out the Carnegie hall the night before at $300 a ticket almost everyone completely ignored him and kept on walking.
This video I shot while wandering the streets of Venice at sunset. The whole thing is good, but they really start going off around 48 seconds into it. If you do not see the video in your browser please click here.