The Magical Manchester Piano
"The Magical Manchester Piano" was an installation in the foyer of Google's "Digital Garage" training centre in Manchester, England.
A traditional piano (built in 1870!) was retrofitted to emit MIDI commands, which triggered animations in response to the notes played on the 4K screen in front of the player.
I built the software running the screen, which coordinated dozens of simultaneous 4k animation sequences at 60fps.