The 18th Annual EarthFest, sponsored by Radio 92.9 and Whole Foods Market, will be held on Saturday May 21, 2011 at the Hatch Shell in Boston. The Radio 92.9 EarthFest is the largest free radio station concert in Boston. The event is produced in conjunction with the Massachusetts Department of Conservation and Recreation. Past events have drawn in excess of 100,000 people
Details: http://www.celebrateboston.com/earthfest.htm