If you haven’t lost all your marbles try this!

Marble Machine built and composed by Martin Molin
Video filmed and edited by Hannes Knutsson

Rube Goldberg would be in awe of the engineering complexity in this marvelous music machine that creates sound with 200 marbles! Its wooden parts are carved and Molin built it after drawing the design in 3-D software.  It’s programmable, and he can change keys midsong.  Take a look at videos about the process of creating the machine on Molin’s website.