Syncronization....
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György Ligeti - Poème Symphonique For 100 Metronomes
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You can play at whatever time you like with 100 metronomes.
I like how the camera pans around quickly, like one of them will run off or do soemthing different.
And then some of those metronomes seem really happy and excited at the fast tempos. The slow ones seemed kind of... slow.
These are analog metronomes.... sad ending.

I think it's kind of creepy.