There are 36 black keys on a standard 88-key piano. The black keys represent sharps and flats. A standard piano with 88 keys has 52 white keys. The white keys are the natural notes.
🎹No Need to Stick with Sticking Glue: Aiebosn piano note labels are made of silicone. Put the keyboard strip on the white keys for a few seconds instead that you do not need to stick all keys ...
In the 18th century keyboard instruments were evolving ... the amount of force used to depress the keys. The addition of extra strings for each note brought new richness and depth to the sound.