Mark Robbins uses ordinary items like wooden blocks, magnets, and tiny balls to create moving works of art. The Minnesota-based YouTuber creates Rube Goldberg-esque designs that are often set to carefully chosen music that syncs up with the clicks and whizzes of the machine's moving parts. In the meditative video below, spotted by Colossal, you can witness Robbins’s latest project: a marble-driven chain reaction set to "Waltz of the Flowers" by the Russian composer Pyotr Ilyich Tchaikovsky.

The song’s lilting peaks and crescendos, typically associated with The Nutcracker, match up with the moving segments of Robbins's contraption nearly beat for beat. This wasn’t an accident—he worked hard to achieve precise synchronization. “After listening to parts of this song hundreds of times to match things up, I went a bit crazy,” Robbins admits in the video's description on YouTube. In our view, it was worth the trouble.

You can watch Robbins’s “Marbles, Magnets, and Music” video in full below:

[h/t Colossal]