Korth

"People were sort of defeated, so there wasn't complete outrage," Korth told us.

Violinist Joshua Bell rewards snowy fans with impromptu performance The Reliable Source 2011

The piece runs 8-10 minutes long; Korth started to record on his cellphone until one of Bell's handlers signaled him to stop filming.

Violinist Joshua Bell rewards snowy fans with impromptu performance The Reliable Source 2011

"It's almost like the Battle of the Bands where you get to show off your talents and an up-and-coming developer could come into one of these and really get everyone's attention," says Evan Korth , a professor in New York University's computer-science department.

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Korth, who played violin as a child, said he's now a lifelong fan.

Violinist Joshua Bell rewards snowy fans with impromptu performance The Reliable Source 2011

Alexander Korth said at 2am on Jan 8th # | good read, marshall.

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"I'm really sorry," Bell said, according to Korth.

Bell rings up impromptu performance Post 2011

Dakota Korth bought fourth-row tickets $100-plus each to see the violinist play at Strathmore Hall on Wednesday night - and was thrilled when the hall's Web site announced that the show would go on despite the storm.

Bell rings up impromptu performance Post 2011

"People were sort of defeated, so there wasn't complete outrage," said Korth, a program officer with the German Marshall Fund.

Bell rings up impromptu performance Post 2011

Korth said his trip home took an hour, but he's not complaining.

Bell rings up impromptu performance Post 2011

It took another hour just to get home, but Korth said he really didn't mind.

Violinist Joshua Bell rewards snowy fans with impromptu performance The Reliable Source 2011