AIR FORCE BAND ensembles, Friday at noon. Free. National Air and Space Museum Udvar-Hazy Center, 14390 Air & Space Museum Pkwy., Chantilly. 202-767-5658.

ARMY BAND ensembles, Friday and Tuesday at 8. Free. West Steps of the U.S. Capitol. 703-696-3399 or 202-619-7222.

ARMY BAND -- Saturday at 6. Free. Cavalier Visitors Center, Harpers Ferry National Historical Park, U.S. 340, Harpers Ferry, W. Va. 304-535-6298.

AIR FORCE BAND -- Sunday at 2:30. Free. Hagerstown Community College, 11400 Robinwood Drive, Hagerstown. 202-767-5658.

NAVY BAND -- Sunday at 7. Free. Humbert Amphitheater, 39 Hickory Ave., Bel Air, Md. 202-433-2525.

NAVY BAND ensembles, Monday and Thursday at 8. Free. West Steps of the U.S. Capitol. 202-433-2525 or 202-619-7222.

NAVAL ACADEMY BAND ensembles, Tuesday at 7:30. Free. City Dock, Annapolis. 410-293-1262.

NAVY BAND -- Tuesday at 8. Free. Navy Memorial, 701 Pennsylvania Ave. NW. 202-433-2525.

AIR FORCE BAND ensembles, Wednesday at noon. Free. National Air and Space Museum, Seventh Street and Independence Avenue SW. 202-767-5658 or 202-633-1000.

MARINE BAND ensembles, Wednesday at 8. Free. West Steps 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.

BOSTON POPS ESPLANADE Orchestra -- Thursday at 8, conducted by Keith Lockhart with vocalist Linda Eder. Filene Center, Wolf Trap Park, 1551 Trap Rd., Vienna. 703-218-6500 or 703-255-1860.

Chamber Groups

WASHINGTON METROPOLITAN Philharmonic ensembles, Sunday at 3. Free. The Lyceum, 201 S. Washington St., Alexandria. 703-799-8229 or 703-838-4994.


JOHN WIDMANN -- carillonneur, Saturday at 6. Free. Netherlands Carillon, Fort Myer and Marshall drives, Arlington. 703-289-2500.

JIN SUN CHO -- organist, Sunday at 6. Free. National Shrine of the Immaculate Conception, 400 Michigan Ave. NE. 202-526-8300.

LEVINE SCHOOL OF MUSIC ensembles, Tuesday at 12:10. Free. Church of the Epiphany, 1317 G St. NW. 202-347-2635.

FRANCOIS RABBATH -- double bass, and pianist Elizabeth Azcona-Hartmark, Thursday at 8. Gildenhorn Recital Hall, Clarice Smith Performing Arts Center, University of Maryland, Route 193 and Stadium Drive, College Park. 301-405-2787.

Choral Groups

NAVY SEA CHANTERS -- Saturday at 2. Free. Fort McHenry National Monument, 2400 E. Fort Ave., Baltimore. 202-433-2525.