What is the difference between pop songs and folk songs and art songs?

First of all, the singing method is different pop and ethnic vocal position, method is not the same, pop is more free a little bit, as you listen to the pop singer's tone will be a big difference in the art song do not quite understand

Secondly, the content is also different pop songs you have heard of not to mention ethnic songs are many songs to celebrate the great mountains and mountains or the men and women in love, art songs are more elegant and delicate in China is more based on the local folk song adaptation

Lastly, different accompaniment pop songs arrangements are diversified ethnic songs are more traditional instruments, mostly folk music, art songs are the piano, accompanied by recitation.

Lastly, the accompaniment is different, pop songs are arranged in a diversified way, folk songs have more traditional instruments, mostly folk music, art songs have piano, and the accompaniment is very short.