What Are Your Choral Musical Moments?

Why, exactly, do certain musical moments stay with us long after the sounds have faded from our ears? In this New York Times article, published in November, Anthony Tommasini examines several of his personal musical moments in an effort to explain why a brief passage can have such a huge emotional impact. Readers responded with their own suggestions, and Tommasini explores some of their feedback in this series of videos. What moments in choral music would you add to this list?