The 25-member orchestra, comprised of all mandolin-related instruments, welcomes special guest Evan Marshal, world-renowned mandolinist and master innovator of duo-style technique. The Orchestra, led by Brian Oberlin, plays classics by Strauss, Bach, Faure, and Lavry, as well as solos, duos, and trios, performing swing and American fiddle tunes. October 25 performances starts at 7:30 p.m. at the Glen and Viola Walters Cultural Arts Center, 527 East Main Street in Hillsboro, 503-615-3485. October 26 performance starts at 7 p.m. at First Presbyterian Church, 4300 Main Street in Vancouver. Tickets for the Hillsboro performance are $15 in advance through Brown Paper Tickets, $20 at the door. Tickets for the Vancouver appearance are $15, $10 for seniors, with no advance sales.