Friends of the Cape Cod National Seashore presents a free concert by the popular duo, Billy Hardy and Beth Sweeney, on Thursday, July 7, at the Salt Pond Visitor Center, Eastham, at 7:00 PM. Billy and Beth have been performing Celtic music together for more than 20 years, playing the fiddle, piano, banjo and mandolin. Their songs draw from the traditions of Ireland, Scotland, Canada, and the United States. Beth may even sing a song or two in Gaelic!