The plate piano was invented by Mistel in France. The original articulator used a series of tuning forks, also known as the piano fork. In 1886, it was officially named the celesta (also known as the aluminum plate piano), and the actual aluminum plate soundbar and resonance tube were made of aluminum.

The shape of the aluminum plate piano is like a small reed organ, and the sound source body is a metal slat. It is played with a piano-like action machine and has a pedal damper to control the length of the sound. A resonance tube is attached to amplify the volume and make the sound clear and pure. The celesta range is generally CC(4), 4 octaves.
The plate piano is another name for the celesta.