The Greenfields will perform Irish ballads, songs of the sea, folk, and contemporary tunes at the 3rd annual Blueberry Festival & Harvest Fair on Saturday, Aug. 11, from 10 a.m. to 3 p.m. in the Darrows Barn at the Round Top Farm, Business Route 1, Damariscotta. The sponsoring Midcoast Unitarian Universalist Fellowship will be selling fresh blueberries, hand-made fabric items and home baked goods to take home or eat there.  Arts and crafts vendors and children's activities will also be offered at the fair. This is a free family event - plenty of parking. For information on participating, call David at 563-2105.