> And don't get me started on all the keys of a piano. Have you come across the Jankó keyboard? https://en.wikipedia.org/wiki/Jank%C3%B3_keyboard https://en.w

> And don't get me started on all the keys of a piano. Have you come across the Jankó keyboard? https://en.wikipedia.org/wiki/Jank%C3%B3_keyboard https://en.wikipedia.org/wiki/Jank%C3%B3_keyboard