Free outdoor afternoon of music, history and entertainment by two dozen fife and drum corps representing different eras including the Revolution, hosted by the William Diamond Junior Fife & Drum Corps of Lexington. Begins with a 250th anniversary ceremony on the Lexington Battle Green (1624 Massachusetts Ave.) honoring the 7 Lexington patriots who fell on the Green at the Battle of Lexington in 1775. Free parking; walking distance from Lexington’s historic Battle Green, Visitors Center and historic houses