A quick (and much wrong with it:) build, a single E acoustic guitar string and using a zither pin for a tuner. I LIKE it as is! What I didn't include in vid comments are the hole in the z. pin is such one could use a little bit thicker, lower sounding string but due to the hole size is limited, at least to an extent. Easy to add a pickup if needed. Fun! Thanks for stopping by :) -Glenn