The piano is a musical instrument played by means of a keyboard. Widely used in Western music for solo performance, ensemble use, chamber music, and accompaniment, the piano is also very popular as an aid to composing and rehearsal. Although not portable and often expensive, the piano 's versatility and ubiquity have made it one of the most familiar musical instruments.Piano originated on Europe in the eighteenth century, Italian Bartolommeo Cristofori invented a instrument which similar to modern piano keyboard instrument. It has been a history of more than three hundred years.But just after half of a century, the piano became more and more popular.

Piano appeared in 1709 at first. It was a complex and expensive instruments in that time and only royalty ans nobility can get contact opportunity. At the beginning, Johann Sebastian Bach and some other prestigious musicians did not appreciate the timbre of piano. When creative musician Mozart, Brahms, and Liszt put into the arms of the piano, enthusiasm be detonated instantaneously. At that time, the young pianist generally like "rock stars". The huge influence they brought made music creation even better and injected powerful force for the development of the piano. Royal and noble added the piano into their band one after another, people can sit around the piano to listen to the latest creation of beautiful melody. The rising of the industrial age derived a new social class---the middle class. Piano became so popular in this