> one-finger pianist

That reminds me there are people who type on the (computer) keyboard with two fingers, searching for each key and pecking at it. I was fortunate to have "blind typing" classes as a child, including a fun game where you type to shoot at words falling on a city. That skill has been really valuable over the years.

I wonder if there are similar concepts for learning to play on the piano keyboard, like "blind" playing to learn where the notes are without even looking; or games where you can practice playing melodies. Even the idea of "weight transfer" seems related to computer keyboard, like typing without lifting your fingers too high.