Music from Miyazaki's film Spirited Away played by delightful rolling metal balls

Enbiggen created a contraption that plays music from Miyazaki's iconic film Spirited Away. The metal ball roll down a maze-like structure of metal keys that play the song when hit in order. The song sounds crisp as ever and doesn't miss a beat. Enbiggen even created a No Face doll that swallows the metal ball and then launches it onto the maze of keys. I could watch this over and over.