Larry Campbell and Teresa Williams

Larry Campbell and Teresa Williams perform Saturday evening on the Martin Guitar Main Stage at the 56th annual Philadelphia Folk Festival (The High Note/ Shaun R. Smith).

Larry Campbell and Teresa Williams perform Saturday evening on the Martin Guitar Main Stage at the 56th annual Philadelphia Folk Festival (The High Note/ Shaun R. Smith).

Larry Campbell and Teresa Williams perform Saturday evening on the Martin Guitar Main Stage at the 56th annual Philadelphia Folk Festival (The High Note/ Shaun R. Smith).