1. Juilliard Orchestra and Choral Union
At Carnegie Hall
A free afternoon community sing-in of Mozart’s Requiem is led by Choral Union founder-director Judith Clurman.
2. Musicians for Harmony
At Merkin Concert Hall
The collective, founded in response to 9/11, presents pianist Leon Fleisher, the Orion Quartet, violinist-composer Mark O’Connor, and others in a concert to benefit education.
3. Trinity Church
Performances of remembrance at the financial district church take place throughout the afternoon, ending with a choral evensong.