Introduce a brief introduction about piano in English about 80- 100 words.

The piano is a musical instrument played through the keyboard. It is one of the most popular musical instruments in the world. Piano is widely used for solo, ensemble, chamber music and accompaniment in classical and jazz music, and it is also very popular as an auxiliary tool for composition and rehearsal. Although it is inconvenient to carry and usually expensive, the versatility and ubiquity of the piano make it one of the most familiar musical instruments in the world.

Pressing a key on the piano keyboard will cause a felt hammer to strike the steel string. The hammer bounces, allowing the strings to continue to vibrate at the resonant frequency. [1] These vibrations are transmitted to the resonance plate through the bridge, and the resonance plate couples the acoustic energy into the air more effectively. Otherwise, the sound will not be louder than the sound directly emitted by the strings. When the keys are released, a damper will stop the vibration of the strings. For the picture of piano keyboard and the position of alto C, please refer to the article about piano key frequency. In Hornbostel-Sachs musical instrument classification system, the piano is regarded as a chord telephone.

The word piano is the abbreviation of pianoforte, which is an Italian word for musical instruments (and the word piano comes from the previous terms "gravicembalo col piano e forte" and fortepiano). The musical terms "piano" and "forte" mean "quiet" and "loud". In this case, they refer to the volume change of the instrument when the piano player touches the keys: the greater the speed of the keys, the greater the impact of the hammer on the strings, and the greater the notes produced.

The piano is a musical instrument played through the keyboard. Piano is widely used in solo, ensemble, chamber music and accompaniment in western music, and it is also very popular as an auxiliary tool for composition and rehearsal. Although inconvenient to carry and usually expensive, the versatility and ubiquity of the piano make it one of the most familiar musical instruments.

Piano is a musical instrument played by various keyboard ways. It is widely used in solo, ensemble, chamber music and accompaniment in western music. It is also very popular in assisting composition and rehearsal. Although it is inconvenient to carry and expensive, the piano has become the most familiar instrument because of its versatility and popularity.