Alexander Calder performs his "Circus" - Whitney Museum - YouTube

https://youtu.be/t6jwnu8Izy0

◇ Alexander Calder's Circus (part 2) - YouTube
https://youtu.be/wIQbjbbNq0Q

◇ Modern Magician: Calder's Circus and the Invention of the Mobile - YouTube
https://youtu.be/Jct5PiBzrhM