A Kinetic Block & Marble Track Perfectly Synchronized with Tchaikovsky’s “Waltz of the Flowers”

Minnesota-based maker DoodleChaos made waves across the internet a few months ago when he perfectly synced a custom course from the Line Rider game to Edvard Grieg’s Hall of the Mountain King. As astounding as it was to watch the digital game and audio sync up, he took things a step further by making a series of IRL Rube Goldberg-like contraptions with marbles, blocks, and magnets that plays perfectly with Tchaikovsky’s Waltz of the Flowers. The feat required listening to the waltz hundreds of times which he says resulted in him “going a bit crazy.” If you liked this, also check out YouTube user Kaplamino.