by Jason Snell & Dan Moren
March 6, 2016 10:19 AM
Michael Rundle at Wired UK:
The Wintergatan Marble Machine, built by Swedish musician Martin Molin and filmed by Hannes Knutsson, is a hand-made music box that powers a kick drum, bass, vibraphone and other instruments using a hand crank and 2,000 marbles.
The video of it in operation is amazing.