Washington Square Park Piano Man, New York City

Often, I would walk through Washington Square park and hear beautiful music. A man playing classical music behind a grand piano.  Classical music expertly played.  Who is this man? How did he learn to play so beautifully? How did he get a grand piano into the park? Why is he doing this?
His name is @"Colin Huggins."  Listen to his music, read his interesting story on his website:

http://colinhuggins.com/bio.html