Very weird & interesting piano enginering experiments

IMHO, this is just somebody who has too much time on his hands and instead of using it to do something productive and useful, he uses it to make something weird to attract unsuspecting people to his YT channel and monetize that. My recommendation is to resist the curiosity and avoid those videos, otherwise it just feeds the (financial) pressure on YT to become a place for random useless videos.

I am quite with that young woman, playing the hammer piano, without reaction. It kind of shows, that pianos are made the way they are, because they just have to be made that way to sound and be played like a piano. It also shows, that bass strings are made for basses - being tuned every day, which is not possible for a piano.

Nevertheless interesting experiments with the result - don't do it - there is just garbage as result.

I even do not really like the "one string" pianos, because they lack some kind of life.