The Choral Arts Society of Washington will sing the All Night Vigil of Sergei Rachmaninoff―a deeply moving experience of Russian choral sacred music in a one-hour concert on Thursday, March 18, in the Cathedral. A limited number of seats are available for a suggested donation of $20. The Cathedral doors will close at 6:15pm and reopen at 7pm that evening. Those wishing to take advantage of these limited seats are advised to come early.