Saturday 4 p.m.: “Basically Baroque,” a recital with flutist and pianist Deni Foster and other musicians. Paint Branch Unitarian Universalist Church, 3215 Powder Mill Rd., Adelphi. 301-982-0758 or www.pbuuc.org.
Saturday 6:30 p.m.: “Christmas in April PG County,” funded by a catered dinner, silent auction and raffle. St. Philip’s Episcopal Church, Sixth and Main streets, Laurel. $40 in advance. 301-776-5151 or Sue O’Connor, 410-461-4382.
Saturday 7-9 p.m.: A St. Patrick’s Day Dinner: corned beef and cabbage, boiled potatoes and carrots, assorted mustards, dark rye and Irish soda bread, assorted beers, wine and cider, coffee and dessert. Singing wait staff. St. Andrew’s Episcopal Church, 4000 Lorcom Lane, Arlington. $15; half portion, $7.50. Reservations: Jane Massant, 703-241-7586 or email@example.com.
Saturday 7:30 p.m.: Riverbend Opera Company performs Puccini’s “Il Tabarro” and “Suor Angelica,” two one-act operas. Semi-staged concert is sung in Italian with English subtitles. Holy Rosary Church, 595 Third St. NW. $25; students, $15. 202-638-0165 or www.holyrosarychurchdc.org.
Saturday 8 p.m.: The College of William and Mary Choir performs selections from Handel’s “Messiah” and Faure’s “Requiem.” Also works by Randall Thompson and African American spirituals. Christ Church Parish Kensington, 4001 Franklin St., Kensington. Free. 301-328-5496.
Sunday 8:30-11:15 a.m.: Martha’s Table ministry, which helps feed homeless men, women and families through its McKenna’s Wagon soup kitchen, collects sandwiches and fruit from volunteers. Washington National Cathedral, Hearst Circle, adjacent to the Wisconsin Avenue parking garage entrance, Wisconsin and Massachusetts avenues NW. Free. 202-537-6200 or firstname.lastname@example.org.
Sunday 10:10 a.m.: Social reconciliation discussion: Cathedral dean Gary Hall leads a discussion with psychologist and advocate Lauren Abramson about the place of reconciliation in society. Washington National Cathedral, Front Nave, Wisconsin and Massachusetts avenues NW. Free. 202-537-6200 or www.nationalcathedral.org.
Sunday 10:30 a.m.: “Make Room for Matzah,” a workshop for ages 2 and older with Marion Usher. Tips on livening up your Seder, adding homemade art to your table and making the feast age-appropriate and meaningful for everyone. Washington D.C. Jewish Community Center, 1529 16th St. NW. $18 per family, registration requested. 202-777-3267 or SarahR@washingtondcjcc.org.
Sunday 2-7 p.m.: 37th Annual Bach Marathon. Ten organists perform in half-hour segments on the church’s three-manual, 50-rank, 2500-pipe Rieger tracker organ. Come when you can, leave when you must. Chevy Chase Presbyterian Church, One Chevy Chase Cir. NW. Donations appreciated. 202-363-2202.