Bosanquet Keyboard (invented in 1875) tuned to 31-tone Equal Temperament. This means the octave is divided into 31 equal parts. It may take a while to load, as there are two octaves.

You can actually buy this amazing keyboard from Starr Labs. It is called the Microzone and it looks like this. And you are not tied to this one tuning either!

this tuning can also be played on the Fokker keyboard

6-6 keyboard nai tubaphone xylophone guitar PVC pan pipe chromatic accordeon type out a tune on the keyboard in front of you! home