A bit of interesting mechanization in music to listen to. #CoSoMusic Wintergatan, Marble Machine (2k marbles) https://youtu.be/IvUU8joBb1Q
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The creator of the Watergatan machine is actually working on one that will play more than 100k marbles for his next performance. (I keep a close watch on his channel to see how the machine evolves, it's interesting engineering.)