Pop-up piano performance

Inside a 5,000-square-foot, otherwise empty, white-walled space at 56th Street and Broadway in Manhattan, a piano plays itself all night long. But for five hours every afternoon into the evening from the beginning of November through Dec. 7, the 32-year-old classical pianist Evan Shinners takes over for the digital player piano and performs the works of J.S. Bach for any who wish to stop, sit and listen.