The pedal is set to one-half step and every time it is held down, the entire instrument's tuning shifts one-half step, so a fully chromatic scale can be played using this method.
The pedal is set to one-half step and every time it is held down, the entire instrument's tuning shifts one-half step. Moving all the white notes on a piano one-half step will cover all the black notes, so a fully chromatic scale can be played using this method.