This alliterate recipe results in a DIY PCB piano that leaves out the levers ... twelve keys but is actually an incomplete octave plus another key one octave above the first.

Piano keyboards act as a good music system to explore different tunes and sounds, and even make tracks on them. They are also a good and more inexpensive option for people who can’t afford a piano.

A typical piano has 88 keys spanning just over seven octaves. There are other, smaller keyboards or synthesizers ... volume control than the harpsichord. One of Cristofori's three surviving ...