Here in New York the Church of Saint Stephen's will be hosting a free concert for peace.  Below are the details.

A Concert for Peace

Dedicated to the Heroes of the
Boston Marathon 2013

Organist and Conductor Paul Murray, a Boston native,
and friends present music as a response to the acts of
terrorism that took place in Boston this week.

Sunday, April 21, 2013
7:00 p.m.

CHURCH OF SAINT STEPHEN
151 East 28th Street
(between 3rd and Lexington Aves.)

Free admission. An offering will be accepted to benefit those affected by Monday's tragedy.