Music comes in many forms; most countries have a style of their own. __1__the turn of the century when jazz (爵士乐) was born, America had no prominent__2__of its own. No one knows exactly when jazz was__ 3__, or by whom. But it began to be__4__in the early 1900s. Jazz is America's contribution to__5__music. In contrast to classical music, which__6__ formal European traditions. jazz is spontaneous and free-form. It bubbles with energy,__7__ moods, interests and emotions of the people. In the 1920s jazz__8__like America. And__9__it does today.

　　The__10__of this music arc as interesting as the music__11__, American Negroes , or blacks, as they are called today were the Jazz__12__. They were brought to the Southern states__ 13__ slaves. They were sold to plantation owners and forced to work long__14__. When a Negro died his friends and relatives__15__a procession to carry the body to the cemetery. In New Orleans, a band often accompanied the__ 16__. On the way to the cemetery the band played slow, solemn music suited to the occasion.__17__on the way home the mood changed. Spirits lifted. Death had removed one of their__18__, but the living were glad to be alive. The band played__19__music, improvising(即兴表演) on both the harmony and the melody of the tunes__20__at the funeral. This music made everyone wan to dance. It was an early form of Jazz .