Xinjiang Dance No. 2 is a piano solo piece. This instrument has 88 keys.

Introduction to the piano:

1. The piano (Italian: pianoforte) is a keyboard instrument in Western classical music and is known as the "King of Instruments". It consists of 88 keys (52 white keys, 36 black keys) and a metal string soundboard. Italian Bartolomeo Christofori (1655-1731) invented the piano in 1709.

2. The piano range ranges from A2 (27.5Hz) to C5 (4186Hz), covering almost all the sounds in the music system. It is the instrument with the widest range except the pipe organ. The piano is commonly used for solo, ensemble, accompaniment and other performances.

3. In January 1789, Mozart and Clementi held the world's first piano performance competition at the Austrian King's Palace in Vienna, which became a sensational event. This competition played an important role in improving the status of piano among other musical instruments.