求英文的关于Jazz music和Blue music的起源的介绍和自己的感受（+分）

Jazz, a kind of African origin in the form of music. In less than a century, the name of this jazz music, has a significant feature of American music from jazz silently without the development of folk songs from a variety of sources, careful research is not easy. Music during the 19th century plantation in the southern United States black slaves to express their emotional life and self-important means. I'm told that the origin of folk music in the United States have developed into the most powerful type of art. Jazz is not surprising in so many forms, and in each of its forms is of prime importance, both to maintain its own unique characteristics and charm and down so far. If you want to enjoy a variety of jazz, experience in a variety of fun, we can not do not need to have an open mind, listen to and compatible.

Blues (Blues) R & B music in order to have a concert to express personal feelings, as its name implies, this music sounds very melancholy (Blue). This song