It's not every day you find a string band playing in the basement of a Chinese restaurant, but that's exactly where the M Shanghai String Band holds court each month on Havermeyer in Williamsburg. They sound like an old Victrola that hasn't been out of the attic in years, which isn't a bad thing. And, going on 1130, its packed to the gills. Hard to imagine a place more homey on a Friday night. (More pics below.)