Swedish musician Martin Molin spent the last 14 months creating a music machine using 3,000 handmade parts and 2,000 marbles. The "music video" debuting this invention premiered on March 1, and people are already going crazy for it. In 8 hours, the video had more than 6,000 upvotes in a Reddit post.
You have to see — and hear — this thing in action to really appreciate its awesomeness. Grab your headphones and watch it now: