There's also https://fogofworld.app, which does this since 2012 and has a big community of people using dedicated "tracking phones" or other gadgets to be as accurate as possible. - Source: Hacker News / 8 months ago

Fog of World: https://fogofworld.app/. Source: about 1 year ago

Https://fogofworld.app. Seems to be still supported. Source: almost 2 years ago

In case you too want to be a master pianist, like Cid: https://touchpianist.com/. Source: 7 months ago

There is a website called https://touchpianist.com where you press any key to play the song and I like it so much, but the music there are very limited, I would love to make a website that I can upload the notes of any song and play it. Can someone help me? :). Source: over 1 year ago

This website lets you play piano songs by clicking random keyboard, and I love it. The problem is that the website seems old and I cant choose other songs etc. Do you know a similar website to this? Source: over 1 year ago

Http://touchpianist.com - plays classical music to your keyboard rhythm. Source: almost 2 years ago

Https://touchpianist.com/ Touch Pianist is a musical toy / instrument that allows the user to perform hard-to-play classical piano music favorites (from composers like Beethoven, Mozart, Bach, Satie, Debussy to name a few) just by tapping the rhythm of the piece's particular sound events on a computer keyboard or a touch screen. Source: almost 2 years ago