In a small walk-down shop in Exeter, New Hampshire, old guitars find new life at the hands of Pat DiBurro. Some are over 150 years old. When DiBurro finishes with them, his goal is that they should sound as good as that day long ago when some master guitar builder declared them done. DiBurro has been working on guitars for over 30 years and as New Hampshire Public Radio’s Jon Greenberg reports, in that time he’s learned that sometimes the most demanding bosses are the dead ones.