Chrome Music Lab: https://musiclab.chromeexperiments.com
This is a #RushE (by @SheetMusicBoss ) cover made in Chrome music lab with square oscillators.
I set up a virtual loopback MIDI port and used it as output in Synthesia. In the browser I set up a listener to receive MIDI messages from the virtual port via the Web MIDI API. Reverse engineered the Oscillator app to be able to control it from my script. Also had to override some of their methods, because the oscillators weren't fast enough for Rush E. Then in Synthesia played an edited version of Rush E so only one note per channel is played at any time.
Music Lab Oscillators: https://musiclab.chromeexperiments.com/Oscillators/
Original video: https://www.youtube.com/watch?v=Qskm9MTz2V4
