This is nothing too crazy but it was fun to put together and it’s a lot of fun to play. Not too long ago I picked up used guitar for $30. It is a First Act, but it was in great condition and my plan was to generally use it for parts or something weird such as this. I rewired it, softened the frets, gave the tuning pegs a little care, shielded it, then routered its guts out and added an optical theremin. The Theremin circuit I used is not too complex so if I were to do this again or suggest someone else to do it I would suggest they use one of better quality. But this is what I had on hand.