There's great yin/yang at work when the forever whimsical Rounder balances his anything-goes persona against that of the comparatively academic (no disâwho wouldn't be?) John Cohen. Due to it, this ever-changing gaggle of singers and strummers is unique in the Stampfel resume. Crazed gospel, boo-hoo bluegrass, kids' songs for adults, giddy swing, Jeannie Scofield's barn dance harmonies, and the most arrestingly scratchy fiddle you'll ever hear. They'll take a flying leap at anything if it's old-timey enough.
Fri., July 10, 8 p.m., 2009