(Disclaimer: Website is not mine, it was a snapshot made by someone else [credit to xe3to])
This website is a piano made by Google as a precursor/pastime to their presentation in September 2020. You type on your keyboard to trigger notes, and these notes are automatically selected by the JS.
Running this JS in the console will change 2 things on the website:
- Music will still play while the tab is unfocused
- Keystrokes will be automated randomly so there doesn't need to be user input