On Sunday, March 2, at 5:00 pm, Concord choirs from First Parish, Trinitarian Congregational, Holy Family, and West Concord Union Church will gather with the choir from Trinity Episcopal Church at Trinity, 81 Elm Street, Concord, MA for a traditional English service of sung prayer called Choral Evensong, in honor of the 250th celebration of the historic battle.  Music included will be by several composers representing the 17th to 21st centuries.  The service is open to all and free admission.