Music is everywhere nowadays.It plays an important role in our life. There are all kinds of music in the world.Such as Blues, Black music,Rock&Roll,Dance music of Punks,Disco,Jazz,Classical music,Rap ,Pop-music and so on. Music is of great use in many fields.It is used in advertising,broadcast,TV,films or the supermarkets.People are supposed to be atracted by the sweet-souding music.So , you can see that it bring profits to the companies. More and more people have their own tools to approach music, like Mp3,Mp4 .But before this,we often use radio,TV or walkman to listen to the music. Why so many people like enjoying music ?In my opinion ,it can ease our presure of social relationship ,study ,work and relax ourselves ,also make us feel better.