DoodleChaos combines wood blocks, dominoes, marbles made of metal and other materials, and magnets to create a delightful marble run set to Tchaikovsky's Waltz of the Flowers.
I've taken the piece "Waltz of the Flowers" by Tchaikovsky, and synchronized it to a chain reaction marble run by hand. After listening to parts of this song hundreds of times to match things up I went a bit crazy.
Bonus video: Line Rider – Mountain King, also by DoodleChaos:
• Marbles, Magnets, and Music (Synchronized) (YouTube / DoodleChaos)