Northeastern University a cappella group Pitch, Please! entertained guests at the annual Big in Boston gala for the Big Sister Association of Greater Boston. WBZ’s Lisa Hughes emceed the benefit at the Museum of Fine Arts. The night’s honoree was Paul Guzzi, former president of the Greater Boston Chamber of Commerce.Names can be reached at firstname.lastname@example.org. Follow Meredith Goldstein on Twitter @MeredithGoldste.