for G - 19quartet - Juan Miguel Hernandez and Melissa White walk down to the performance room, a gallery space at Antioch College. The Harlem Quartet, part of New England Conservatory's highly competetive master quartet program, performed at Antioch College in Yellow Springs, Ohio on March 17, 2012. The quartet's current cellist, Paul WIancko, has decided to leave the quartet. (Andrew Spear for The Boston Globe)