I used a "Touch Board" from Bare Conductive and my own woodworking/electronics skills to make this project. It's basically a touch keyboard. But instead of a regular piano-type keyboard, the notes are activated when a small metal button is touched on one of the rings. BTW, Bare Conductive did not sponsor this video, they just make some really cool products that you should check out - maybe even build your own touch keyboard ring thing! https://www.bareconductive.com