NEW YORK GILBERT & Sullivan Players -- Gilbert & Sullivan's "H.M.S. Pinafore," Friday and Saturday at 8. Filene Center at Wolf Trap Park, 1551 Trap Rd., Vienna. 703-218-6500 or 703-255-1860.
VICTORIAN LYRIC OPERA CO. -- Gilbert & Sullivan's "The Yeomen of the Guard," through June 19. Friday and Saturday at 8, Sunday at 2. Scott Fitzgerald Theatre, 603 Edmonston Dr., Rockville. 240-314-8690.
SUMMER OPERA THEATRE Company -- Massenet's "Cendrillon" ("Cinderella"), through June 19. Sunday at 2:30 and Wednesday at 7:30. Hartke Theatre, Catholic University, 3801 Harewood Rd. NE. campus at 620 Michigan Ave. NE. Call 202-526-1669 or 202-319-4000.
NATIONAL SYMPHONY ORCHESTRA -- Friday and Saturday at 7, conducted by Leonard Slatkin in Brahms's Symphony No. 1, with discussion by Martin Goldsmith. Thursday at 7, conducted by Leonard Slatkin with violinists Mark O'Connor and Nadja Salerno-Sonnenberg in Hindemith's "Mathis der Maler," O'Connor's Double Concerto for Two Violins and Elgar's "Variations on an Original Theme." 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 Yuri Temirkanov with pianist Kit Armstrong in Beethoven's Piano Concerto No. 1, Rimsky-Korsakov's "Russian Easter" Overture and Prokofiev's Symphony No. 7. Thursday at 8, conducted by Yuri Temirkanov with violinist Vadim Repin in Tchaikovsky's Violin Concerto, Brewbaker's Violin Concerto (world premiere) and Respighi's "Pines of Rome." Joseph Meyerhoff Symphony Hall, 1212 Cathedral St., Baltimore. 410-783-8000 or 800-442-1198.
ARMY BAND ensembles, Friday at 8. Free. West Terrace of the U.S. Capitol. 703-696-3399 or 202-619-7222.
McLEAN SYMPHONY -- Saturday at 7:30, conducted by Dingwall Fleary with pianist Robert Statham in Rachmaninoff's Symphony No. 2 and Piano Concerto No. 2. Alden Theater, McLean Community Center, 1234 Ingleside Ave., McLean. 703-790-9223.
MONTGOMERY SYMPHONY Orchestra, Saturday at 7:30, conducted by A. Scott Wood in works by Cherubini, Smetana, Frescobaldi and others. Free. Walter Johnson High School, 6400 Rock Spring Dr., Bethesda. 301-385-6438.
NATIONAL ORCHESTRAL INSTITUTE -- Saturday at 8, conducted by Gerard Schwartz in Mozart's Symphony No. 35 and Mahler's Symphony No. 7. Dekelboum Concert Hall, Clarice Smith Performing Arts Center, University of Maryland, Route 193 and Stadium Drive, College Park. 301-405-2787.
ARLINGTON SYMPHONY -- Sunday at 1, in a family program. Rachel Schlesinger Arts Center, Northern Virginia Community College, 3001 N. Beauregard St., Alexandria. 703-548-0885.
WASHINGTON CONSERVATORY Orchestra, Sunday at 3, conducted by A. Scott Wood in Vaughan Williams' "Flourish for Wind Band," Holst's "A Moorside Suite," Grainger's "Early One Morning" and Beach's"Gaelic Symphony." National Cathedral School, Wisconsin Avenue and Woodley Road NW. 301-320-2770.
NAVY BAND ensembles, Monday and Thursday at 8. Free. West Terrace of the U.S. Capitol. 202-433-2525 or 202-619-7222.
AIR FORCE BAND ensembles, Tuesday at 8. Free. West Terrace of the U.S. Capitol. 202-767-5658 or 202-619-7222.
NAVY BAND -- Tuesday at 8. Free. Navy Memorial, 701 Pennsylvania Ave. NW. 202-433-2525.
MARINE BAND ensembles, Wednesday at 8. Free. West Terrace of the U.S. Capitol. 202-433-4011 or 202-619-7222.
MARINE BAND -- Thursday at 7. Free. U.S. Marine Corps War Memorial, on U.S. 50 adjacent to Arlington National Cemetery, Arlington. 202-433-4011.
CITY OF FAIRFAX BAND -- Thursday at 8. Free. Veterans Amphitheater, Fairfax City Hall, 10455 Armstrong St., Fairfax. 703-385-7858 or 703-757-0220.
CAMERATA TRAJECTINA -- Friday at 7:30. St. Joseph's on Capitol Hill, 313 Second St. NE. 202-547-1223.
AMERICAN CHAMBER PLAYERS -- Friday and Tuesday at 7:30. Kreeger Museum, 2401 Foxhall Rd. NW. 202-337-3050.
EASTERN SHORE CHAMBER Music Festival -- Opening concert, Friday at 8. Free children's program, Thursday at 5. Avalon Theatre, 40 E. Dover St., Easton. 410-819-0380.
POST-CLASSICAL ENSEMBLE -- Saturday and Sunday at 3, accompanying two New Deal-era documentaries Silver Theater, 8633 Colesville Rd., Silver Spring. 301-495-6738.
"ROCK CREEK FESTIVAL" -- Saturday at 7:30, St. Paul's Choir. Monday at 7:30, mezzo-soprano Barbara Hollinshead, lutenist Howard Bass, violist Douglas Wolters, harpist Constance Whiteside and dancer Cheryl Staffod. Monday at 10, the Countertop Quartet. Tuesday at 7:30, Columbia Union College Choir and Orchestra and St. Paul's Choir in Vivaldi's "Gloria" and John Rutter's "Feel the Spirit," directed by John Rutter. Wednesday at 7:30, organist John Scott. Thursday at 7:30, Duke Ellington School of the Arts students and faculty, Thursday at 7:30. St. Paul's Church, Rock Creek Church Road and Webster Street NW. 202-726-2080.
MODERN MUSICK -- Sunday at 3. St. Mary Mother of God Catholic Church, 727 Fifth St. NW. 703-684-2114.
ROCK CREEK CHAMBER PLAYERS -- Sunday at 4. Free. Christ Lutheran Church, 8011 Old Georgetown Rd., Bethesda. 202-337-8710.
COUNTERTOP QUARTET -- Thursday at 7:30. St. Paul's Church, 2430 K St. NW. 202-318-9180.
FRIDAY MORNING MUSIC CLUB -- Friday at noon. Free. Sumner School Museum, 1201 17th St. NW. 202-333-2075.
RACHEL BARHAM and Cynthia Nickerson, sopranos, baritones James Rogers and Shannon Kiser, flutist Molly Moses and pianist Paul Leavitt, Saturday at 3:30. Free. Lutheran Church of the Reformation, 212 East Capitol St. NE. 703-527-9319.
EDWARD NASSOR -- carillonneur, Saturday at 6. Free. Netherlands Carillon, Fort Myer and Marshall drives, Arlington. 703-289-2500.
EVE KORNHAUSER -- mezzo-soprano, pianist Gillian Cookson, flutist Linda Eagleson and cellist Douglas Walters, Saturday at 7. Unitarian Universalist Church of Rockville, 100 Welsh Park Dr., Rockville. 301-766-7622.
MEI-TING SUN -- pianist, Sunday at 4. Ring Auditorium, Hirshhorn Museum, Seventh and Independence SW. 202-357-3030.
ALVY POWELL -- bass baritone, Sunday at 4. Lochearn Presbyterian Church, 3800 Patterson Ave., Baltimore. 410-329-6874.
KYLE ENGLER -- mezzo-soprano, soprano Michelle Kunz and pianist Patrick O'Donnell, Sunday at 4. St. Patrick's Episcopal Church, 3241 Brush Dr., Falls Church. 703-533-9454.
ROBERT GROGAN -- organist, Sunday at 6. Free. National Shrine of the Immaculate Conception, 400 Michigan Ave. NE. 202-526-8300.
CARLOS CESAR RODRIGUEZ -- Sunday at 6:30. Free. West Garden Court, National Gallery of Art, Sixth and Constitution NW. 202-842-6941.
DENNIS SOBIN -- guitarist, Monday at noon. Free. The Old Post Office Pavilion, 1100 Pennsylvania Ave. NW. 202-289-4224.
MOELLER DUO -- cello/guitar, Tuesday at 12:10. Free. Church of the Epiphany, 1317 G St. NW. 202-347-2635.
LOIS NARVEY AND RALITZA Patcheva, harpsichordists, Tuesday at 7. Free. Levine School of Music, 2801 Upton St. NW. 202-686-8000.
FRIDAY MORNING MUSIC CLUB -- Tuesday at 7:30. Free. Dumbarton House, 2715 Q St. NW. 202-333-2075.
PAUL SKEVINGTON -- organist, Wednesday at 1. Free. St. Luke Catholic Church, 7001 Georgetown Pike, McLean. 703-356-0670.
YAN LIU -- violinist, Wednesday at 6. Free. Millennium Stage, Kennedy Center Grand Foyer, 2700 F St. NW. 202-467-4600 or 800-444-1324 (TDD: 202-416-8524).
ROSA LAMOREAUX -- soprano, Wednesday at 7, leading a sing-along of music from "The Sound of Music" and "My Fair Lady." Ring Auditorium, Hirshhorn Museum, Seventh and Independence SW. 202-357-3030.
NSO YOUTH FELLOWS -- Thursday at 6. Free. Millennium Stage, Kennedy Center Grand Foyer, 2700 F St. NW. 202-467-4600.
ALEXANDRIA CITY CHOIR -- Friday at 12:15. Free. Market Square, 301 King St., Alexandria. 703-883-4686.
NAVY SEA CHANTERS -- Saturday at noon. Free. Beckett Field, 8511 Legation Rd., New Carrollton. 202-433-2525.
GAITHERSBURG COMMUNITY Chorus -- Saturday at 7. Free. Gaithersburg City Hall Concert Pavilion, 31 S. Summit Ave., Gaithersburg. 301-258-6350.
PALESTRINA CHOIR -- Saturday at 7:30. St. Joseph's on Capitol Hill, 313 Second St. NE. 202-547-1223.
MOSAIC HARMONY -- Saturday at 7:30 and Sunday at 3:30. Grace Presbyterian Church, 7434 Bath St., Springfield. 703-938-1141.
VOICES XXI -- Saturday at 7:30: Riverdale Presbyterian Church, 6513 Queens Chapel Rd, University Park. Sunday at 4: National Shrine of the Immaculate Conception, 400 Michigan Ave. NE. 240-643-6563.
POLYHYMNIA -- Saturday at 8: St. Columba's Episcopal Church, 4201 Albemarle St. NW. Sunday at 2:30: Silver Spring Presbyterian Church, 580 University Blvd. E., Silver Spring. 301-565-0314.
NAVY SEA CHANTERS -- Sunday at 7. Free. Bladensburg Waterfront Park, 4601 Annapolis Rd., Bladensburg. 202-433-2525.
METROPOLITAN CHORUS -- Monday at 8. Free. Lubber Run Amphitheater, North Columbus and North Second streets, Arlington. 703-228-1850 or 703-228-6966.
"WASHINGTON SUMMER SINGS" -- Mozart's "Requiem," conducted by Tom Hall, Tuesday at 7:30. Sponsored by the New Dominion Chorale at Western Presbyterian Church, 2401 Virginia Ave. NW. 703-442-9404.
ARLINGTONES BARBERSHOP CHORUS and Quartets, Tuesday at 8. Free. Lubber Run Amphitheater, North Columbus and North Second streets, Arlington. 703-228-1850 or 703-228-6966.
POTOMAC HARMONY CHORUS -- Wednesday at 8. Free. Lubber Run Amphitheater, North Columbus and North Second streets, Arlington. 703-228-1850.
ALEXANDRIA SINGERS -- Thursday at 7:30. Free. Market Square, 301 King St., Alexandria. 703-883-4686.