That is some next-level stuff. How could he possibly do it? There's a guy over on YouTube that is making a marble music machine: https://www.youtube.com/user/w

That is some next-level stuff. How could he possibly do it? There's a guy over on YouTube that is making a marble music machine: https://www.youtube.com/user/wintergatan2000 https://www.youtube.com/user/wintergatan2000 He is very dedicated, is quite smart, but he has being trying to build one for years, and has been a never-ending mechanical engineering challenge. Put into that perspective, the clock is no less than a work of pure genius.