A piano is an incredible invention! Its design has been perfected over hundreds of years and continues to be improved upon even now.
Before humans had anything recognisable as a piano, we had the harpsichord and hammered dulcimer.
The harpsichord is like a piano in that it has a keyboard and strings, but the strings are plucked instead of hammered so it produces a very different sound.
The hammered dulcimer is like a piano because, as the name suggests, the strings...