Start playing immediately, even if you can’t read sheet music. Use the touchscreen or connect a digital keyboard and play using real piano keys!
https://play.google.com/store/apps/details?id=com.synthesia.synthesia
example : https://www.youtube.com/watch?v=XDmczii5-R0
origin - https://www.pipiscrew.com/2018/04/synthesia/ synthesia