The Chapel Choir presents works based on and inspired by the Great “O” Antiphons, used at Vespers in the last seven days before Christmas. The ancient text, which calls upon Christ using images from scripture, is the basis of the beloved Advent hymn “O Come, O Come, Emmanuel.” The program will feature music of Felix Mendelssohn, Ēriks Ešenvalds, Melissa Dunphy, and more.