Tom Mason and the Blue Buccaneers will unearth their buried treasure at Bluegrass Underground when they celebrate the release of their new CD “Yo Ho Ho: A Pirate’s Christmas” and the re-release of the instrumental “A Slide Guitar Christmas.” These fun-loving pirates will take you back 300 years to a holiday party in the caverns set for Saturday, Dec. 14 at 1 p.m. Bluegrass Underground is a radio show recorded live 333 feet below ground at Cumberland Caverns.Tom Mason and the Blue Buccaneers have been touring the U.S., the Caribbean, and the world in their tricorn hats and bandannas playing their rollicking mix of piratical sing-alongs and bluesy Irish jigs. The crew consists of some of the finest musicians in any hemisphere and draws on their deep musical backgrounds to create a work rich with flavor and soul.