高通801和615哪个好:谁能用英文介绍下jazz?多谢

借花献佛
Jazz is the art of expression set to music! Jazz is said to be the fundamental rhythms of human life and man’s contemporary reassessment of his traditional values. Volumes have been written on the origins of jazz based on black American life-styles. The early influences of tribal drums and the development of gospel, blues and field hollers seems to point out that jazz has to do with human survival and the expression of life.
The origin of the word "jazz" is most often traced back to a vulgar term used for sexual acts. Some of the early sounds of jazz where associated with whore houses and "ladies of ill repute." However, the meaning of jazz soon became a musical art form, whether under composition guidelines or improvisation, jazz reflected spontaneous melodic phrasing.
Jazz developed in the latter part of the 19th cent. from black work songs, field shouts, sorrow songs, hymns, and spirituals whose harmonic, rhythmic, and melodic elements were predominantly African. Because of its spontaneous, emotional, and improvisational character, and because it is basically of black origin and association, jazz has to some extent not been accorded the degree of recognition it deserves. European audiences have often been more receptive to jazz, and thus many American jazz musicians have become expatriates.