Music is an art based on sound, which is different from ordinary sound. It forms different music with certain melody, rhythm, harmony and timbre, among which various musical instruments play an extremely important role, such as woodwind instruments, which have different timbres and distinctive features. From beautiful and bright to gloomy and melancholy, it involves all aspects and has shaped various vivid musical images from ancient times to the present. The timbre of brass instruments is magnificent and warm, and brass instruments lag far behind other kinds of instruments because of their grand and broad characteristics. Of course, there are piano and other musical instruments that everyone is very familiar with. Among all kinds of musical instruments, national musical instruments also play a very important role. A specific national musical instrument embodies a nation's local characteristics, customs and habits, habitual personality and so on. Erhu, as a typical Chinese musical instrument, is deeply loved by the majority of music lovers and is more and more actively among the world music forests. The timbre of erhu is similar to human voice, with distinctive personality, artistic appeal and national charm, thus bringing unique artistic sacrifice and vigorous vitality to erhu art?

Music is a symbol, a sound symbol, which expresses people's thoughts. It is one of the carriers of people's thoughts. Music has a purpose and connotation, which implies the author's life experience and thoughts and feelings. From the sound wave analysis, music is between noise and pure tone with constant frequency. From the effect, it can bring people the enjoyment of beauty and express people's feelings. Music is a form of social behavior, through which people can exchange their feelings and life experiences with each other. This is the most prominent role in the song. The creation of many great musicians and the popularity of folk songs are basically inspired. This kind of music integrates the musician's feelings into the works, so that people can deeply appreciate the musician's profound thoughts in the process of enjoying the music, thus achieving emotion. ?

Music is a good way of expression. Animal Carnival is a music with animals as its theme. In the animal carnival, Saint Sang used different music to express the behavioral characteristics of various animals. This piece of music consists of thirteen bands.