What happens when a $2.5M Stradivarius in the hands of one of the worlds foremost violinists plays the subway as street performer? Virtually nothing. He was recognized by one person near the end of his performance, and only saw a handful of people stop to admire his music.
The reaction from children was interesting. While the vast majority of adults strode by without a glance, nearly every child turned their attention to the music as their parent(s) tried keep them moving along.