Radio Tarifa is what world music’s all about. Hailing from southern Spain, the band blends flamenco, medieval, North African, and Middle Eastern styles. It’s a fusion that works brilliantly, since the group’s arrangements (which use an incredible array of instruments including oud, bouzouki, violin, accordion, flute, crumhorn, tenor and soprano saxophones, bass guitar, tabla, and djembe) retain the distinctive flavorings of all of these influences. And Radio Tarifa’s music is really rhythmic; it may not be producing the rock ‘n’ roll beats most of us are used to, but its stuff will definitely get your feet tapping and hands clapping. The multiethnic/multicultural grooves begin at 8 p.m. at the Barns of Wolf Trap, 1635 Trap Road, Vienna. $15. (703) 938-2404. (Ken Roseman)