Wintergatan (featured previously) has just completed the conveyor belt for their continually evolving musical masterpiece, Marble Machine X. The handmade music box powers a kick drum, bass, vibraphone and more using a hand crank and thousands of marbles.

Words don’t do Marble Machine X justice, it’s something you just have to watch. If you’re interested in learning about the build process and seeing the project come to fruition, be sure to follow their channel on YouTube for weekly updates!