WASHINGTON NATIONAL OPERA -- Giordano's "Andrea Chenier," through Saturday: Saturday at 7. Britten's "Billy Budd," through Sunday: Sunday at 2. Kennedy Center Opera House, 2700 F St. NW. 202-467-4600 or 800-444-1324 (TDD: 202-416-8524).
SHANGHAI TRADITIONAL Orchestra -- Friday at 12:30. Free. Meyer Auditorium, Freer Gallery of Art, 12th and Independence SW. 202-633-1000.
NATIONAL SYMPHONY ORCHESTRA -- Friday at 1:30 and Saturday at 8, conducted by Leonard Slatkin with violinist Joshua Bell in R. Strauss's Suite from "Der Rosenkavalier," Mendelssohn's Violin Concerto in E Minor, Fine's "Notturno for String Orchestra With Harp" and Janacek's "Sinfonietta." Thursday at 7, conducted by Marvin Hamlisch with soprano Julie Budd and actor Steven Brinberg in a salute to the music of Barbara Streisand. Kennedy Center Concert Hall, 2700 F St. NW. 202-467-4600 or 800-444-1324 (TDD: 202-416-8524).
BALTIMORE SYMPHONY ORCHESTRA -- Friday at 8, Saturday at 8 and Sunday at 3, conducted by Mario Venzago with pianist Eduardus Halim in Shchedrin's "Carmen" Suite, Falla's "Nights in the Gardens of Spain" and Ravel's "Alborada del gracioso." Joseph Meyerhoff Symphony Hall, 1212 Cathedral St., Baltimore. 410-783-8000 or 800-442-1198.
CATHOLIC U. SYMPHONY Orchestra, conducted by Kate Tamarkin with soprano Sharon Christman in Berlioz's "Roman Carnival Overture," Barber's "Knoxville, Summer 1915" and Tchaikovsky's Symphony No. 4. Friday at 8: Schlesinger Arts Center, Northern Virginia Community College, 3001 N. Beauregard St., Alexandria. Sunday at 3: Sligo Seventh-day Adventist Church, 7700 Carroll Ave., Takoma Park. 202-319-5416.
ALEXANDRIA SYMPHONY Orchestra, Saturday at 8, conducted by Kim Allen Kluge with guitarist and vocalist Marija Temo and dancers Anna Menendez and Edwin Aparicio in Rimsky-Korsakov's "Capriccio Espagnol," Chobanian's "Concierto del Fuego" and de Falla's "El Amor Brujo." Schlesinger Arts Center, Northern Virginia Community College, 3001 N. Beauregard St., Alexandria. 202-397-7328 or 703-548-0885.
NAVY BAND -- Saturday at 8, conducted by Ralph M. Gambone. Free, but tickets required. College of Southern Maryland, 8730 Mitchell Rd., La Plata. 301-934-7828 or 202-433-2525.
SHANGHAI TRADITIONAL Orchestra -- Sunday at 5. Embassy of the People's Republic of China, 2300 Connecticut Ave. NW. 202-625-2361.
NATIONAL GALLERY ORCHESTRA -- Sunday at 6:30, conducted by Angel Gil-Ordonez in Schubert's "Overture in B-flat" and Dvorak's "Serenade for Strings" and "Czech Suite." Free. West Garden Court, National Gallery of Art, Sixth and Constitution NW. 202-842-6941.
ARMY CONCERT BAND -- Thursday at 7:30, conducted by Harry Begian. Free. Brucker Hall, 204 Lee Ave., Fort Myer, Arlington. 703-696-3399.
AIR FORCE BAND TUBA-EUPHONIUM Quartet, Friday at 8. Free. George Washington Masonic National Memorial, 101 Callahan Dr., Alexandria. 202-687-3838 or 202-767-5658.
LANDON SYMPHONETTE Chamber Ensemble, Saturday at noon. Free. Friendship Heights Community Center, 4433 S. Park Ave., Chevy Chase. 301-656-2797.
THE T'ANG QUARTET -- Friday and Saturday at 8. Embassy of Singapore, 3501 International Pl. NW. 202-625-2361.
COVINGTON STRING QUARTET with pianist John Wickelgren, Saturday at 1:30. Free. Anderson House Museum, 2118 Massachusetts Ave. NW. 202-785-2040.
SMITHSONIAN CHAMBER MUSIC Society, Saturday at 7:30. Baird Auditorium, National Museum of Natural History, 10th and Constitution NW. 202-357-3030.
TRINITY CHAMBER PLAYERS with soprano Jessica Swink, Saturday at 7:30. Oakcrest School, 850 Balls Hill Rd., McLean. 301-545-1186.
WOODBRIDGE FLUTE Choir and Sonoran Winds Woodwind Quintet, Sunday at 3. St. Jane de Chantal Church, 9701 Old Georgetown Rd., Bethesda. 301-530-1550.
ANNANDALE CHAMBER PLAYERS -- Sunday at 4. Free. Arlington United Methodist Chruch, 716 S. Glebe Rd., Arlington. 703-569-0973.
NATIONAL SYMPHONY ORCHESTRA musicians and friends, Sunday at 6. A benefit for the Japanese Americans' Care Fund. The Lyceum, 201 S. Washington St., Alexandria. 703-644-1849 or 703-838-4994.
DENNIS SOBIN -- guitarist, Monday at noon. Free. The Old Post Office Pavilion, 1100 Pennsylvania Ave. NW. 202-289-4224.
RED CEDAR CHAMBER RAPIDS -- Tuesday at 6. Czech Embassy, 3900 Spring of Freedom St. NW. 202-274-9100, Ext. 3413.
ARMY BAND ensembles, Tuesday at 7:30. Free. Brucker Hall, 204 Lee Ave., Fort Myer, Arlington. 703-696-3399.
WASHINGTON MUSICA VIVA -- Tuesday at 7:30. Dennis & Phillip Ratner Museum, 10001 Old Georgetown Rd., Bethesda. 301-493-5729.
AIR FORCE CHAMBER Players, Wednesday at 8. Free. McNeir Hall, Georgetown University, 37th and O NW. 202-767-5658.
NEW ZEALAND STRING QUARTET -- Thursday at 7:30. Strathmore Arts Center, 10701 Rockville Pike, North Bethesda. 301-581-5100.
TERRA NOVA CONSORT -- Thursday at 7:30. Free. Meyer Auditorium, Freer Gallery of Art, 12th and Independence SW. 202-633-1000.
HYUK JOO KWUN -- violinist, and pianist Anna Balakerskaia, Saturday at 7:30. Kennedy Center Terrace Theater, 2700 F St. NW. 202-467-4600 or 800-444-1324 (TDD: 202-416-8524).
AWADAGIN PRATT -- pianist, Saturday at 8. F. Scott Fitzgerald Theatre, 603 Edmonston Dr., Rockville. 240-314-8690.
MARK STEINER -- organist, Sunday at 4. Free. St. Peter's Episcopal Church, Route 2, Solomons Island, Md. 301-884-3723.
JOHN CLODIG -- organist, Sunday at 5. Free. Washington National Cathedral, Wisconsin and Massachusetts avenues NW. 202-537-6200.
JEFFREY SIEGEL -- pianist, Sunday at 7. Center for the Arts Concert Hall, George Mason University, 4400 University Dr., Fairfax. 703-218-6500 or 703-993-8888.
LAURIE RUBIN -- mezzo-soprano, Monday at 6. Free. Millennium Stage, Kennedy Center Grand Foyer, 2700 F St. NW. 202-467-4600 or 800-444-1324 (TDD: 202-416-8524).
CHEE-YUN -- violinist, and pianist Barry Douglas, Tuesday at 7:30. Kennedy Center Terrace Theater, 2700 F St. NW. 202-467-4600 or 800-444-1324 (TDD: 202-416-8524).
GILLIAN WEIR -- organist, Wednesday at 7:30. St. Paul's Church, Rock Creek Church Road and Webster Street NW. 202-726-2080.
FOUNDRY CHURCH CHOIR and Orchestra, Friday at 8, conducted by Eileen Guenther in Vaughan Williams's "Serenade to Music" and works by Purcell, Schubert, Bernstein and Victor Herbert. A benefit for HIV/AIDS charities. Foundry United Methodist Church, 16th and P NW. 202-332-4010.
CANTATE CHAMBER SINGERS -- Saturday at 8, J.S. Bach's Mass in B Minor. St. John's Episcopal Church, 6701 Wisconsin Ave., Chevy Chase. 301-986-1799.
ALBRIGHT MEMORIAL CHURCH Male Voices, Sunday at 4. Albright Memorial United Methodist Church, Fourth and Rittenhouse NW. 202-723-3525.
BEL CANTO SINGERS -- Sunday at 4, "Love Is In the Aire." The Theatre, 291 Gay St., Washington, Va. 540-675-1253.
WASHINGTON BACH CONSORT -- Sunday at 5. Grace Episcopal Church, 6507 Main St., the Plains. 540-253-5177.
WASHINGTON BACH CONSORT -- Tuesday at 12:10. Free. Church of the Epiphany, 1317 G St. NW. 202-347-2635.