Oak Ash and Thorn is back to open the season at the Castle Folk Club on Sept. 2 at 8 pm. Known for great traditional harmonies and irreverent humor, this acappela trio has long been a favorite among bay area fans of British and American traditional music-- tickets $10 at the door.

At the Connecticut Yankee 17th & Connecticut Sts San Francisco

RiGGy ps: MudCat's own Dave Swan is the tenor of OA&T