WOLF TRAP OPERA COMPANY -- Mozart's "Don Giovanni," through July 31. Friday at 8 and Sunday at 2. The Barns at Wolf Trap, 1635 Trap Rd., Vienna. 703-218-6500 or 703-938-2404.
BEL CANTANTI -- "Some Enchanted Evening," Saturday at 7:30. Rosborough Hall, Asbury Methodist Village, 409 Russell Ave., Gaithersburg. 301-438-8682.
AMERICAN CENTER FOR PUCCINI Studies -- Puccini's "La Boheme," Thursday at 7:30. Greenridge Baptist Church, 21925 Frederick Rd,. Boyds. 301-528-4305.
NATIONAL SYMPHONY ORCHESTRA -- Friday at 6, conducted by Emil de Cou with 2005 Young Soloists' Competition winners pianist Kimberly Kong and alto saxophonist Maureen Walsh. Free. Kennedy Center Concert Hall, 2700 F St. NW. 202-467-4600 or 800-444-1324 (TDD: 202-416-8524).
CHESAPEAKE ORCHESTRA -- Friday at 7, conducted by Jeffrey Silberschlag with singer Vonda Shepherd in Bartok's Concerto for Orchestra and Shepherd/Froom's "Songs From the Heart." Free. St. Mary's College of Maryland, Route 5, St. Mary's City, Md. 240-895-2024.
BALTIMORE SYMPHONY ORCHESTRA -- Friday at 7:30, conducted by Hugh Wolff with pianist Yuja Wang in Walton's "Facade Suite No. 1," Liszt's Piano Concerto No. 1 and Schumann's Symphony No. 1, followed by dancing on the outdoor terrace. Joseph Meyerhoff Symphony Hall, 1212 Cathedral St., Baltimore. 410-783-8000 or 800-442-1198.
AIR FORCE BAND ensembles, Friday at noon. Free. National Air and Space Museum Udvar-Hazy Center, 14390 Air and Space Hwy., Chantilly. 202-767-5658 or 202-633-1000.
ARMY BAND ensembles, Friday and Tuesday at 8. Free. West Steps of the U.S. Capitol. 703-696-3399 or 202-619-7222.
BALTIMORE SYMPHONY Orchestra-- Saturday at 8, in a pops program with the Mambo Kings, followed by fireworks. Oregon Ridge Park, 13401 Beaver Dam Rd., at Exit 20-B off I-83, Cockeysville. 410-783-8000 or 800-442-1198.
NSO SUMMER MUSIC Institute Orchestra, Sunday at 6, conducted by Elizabeth Schulze. Free. Kennedy Center Concert Hall, 2700 F St. NW. 202-467-4600 or 800-444-1324 (TDD: 202-416-8524).