Pure musical yum. The New Yorker calls the energetic Catie Curtis, part of Massachusetts' thriving lesbian folk scene, a "folk-rock goddess." She puts on a lovely show, and her loyal local fan base is legion. Fellow acoustic songwriter Meg Hutchinson, compared to Mary Chapin Carpenter and Joni Mitchell, opens. Friday, Nov. 18, at 8 p.m. The Barns at Wolf Trap, 1645 Trap Road, Vienna. Tickets are $22. Call 703-255-1900 or visit wolf-trap.org.