So I once had an uncle-by-marriage that used to install carpet. At some old house he once worked, the owner gave him some ill-fated vintage guitar (just molding away in the basement), and I've never seen anything like it before or since. The neck was detached, and there were all sorts of wires running from the neck hollow into the body. Each fret was about 3/8" across, and each fret was some sort of individual pickup. It was crazy. He was unable to ever get it back together, but I have never forgotten it. That was about 1987, and it was old then.

Anyone have any idea what the heck this thing might have been?