Composer Tan Dun chats about his life, including his student years, when he played the violin on a Greenwich Village street corner to make money: “It was West Fourth Street. That time it was very good. In an hour I can make maybe $30. Amazing. I still see those people who used to share the spot with me. ‘Hey, Tan, where are you playing?’ I say, ‘I play at Lincoln Center, but inside.’ “