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Founded in 1973 as a commune for musicians in the wilds of New Hampshire, the Apple Hill Chamber Players have since evolved into an ensemble of earnest, brilliant teacher-musicians. When they’re not saving the world—through a program that brings kids from warring nations in the Middle East together for a summer of music and life lessons—they tour, performing new works alongside masterpieces from the 18th, 19th, and 20th centuries. One of their most popular commissions, Lucy and the Count by Jon Deak, is the famous vampire story told entirely through music. Dialogue and sound effects—bats screeching, coffins opening, mist rolling in—are all created with stringed instruments. Bookending Lucy and the Count at the ensemble’s concert on Saturday night are compositions by Hayden and Brahms. To judge by the ensemble’s past engagements in Washington, the entire evening should go down like a perfectly colored red wine. At 8 p.m. at Dumbarton Church, 3133 Dumbarton St. NW. $24. (202) 828-3090. (Roberto Aguirre-Sacasa)