Music comes in many forms:most countries have a style of their own.【C1】______the turn of the century when jazz was born, America had no prominent style of its own. No one knows exactly when jazz was【C2】______, or by whom. But it began to be heard in the early 1900s. Jazz is America's contribution to【C3】______music. In contrast to classical music, which【C4】______formal European traditions, jazz is spontaneous and free in form. It bubbles with energy, 【C5】______the moods, interests, and emotions of the people. In the 1920s jazz sounded like America, and【C6】______it does today. The【C7】______of this music are as interesting as the music itself. American negroes, or blacks, as they are called today, were the jazz pioneers. They were brought to Southern States as slaves. They were sold to plantation owners and forced to work long【C8】______. When a Negro died his friends and relatives【C9】______a procession to carry the body to the cemetery. In New Orleans, a band often accompanied the procession. On the way to the cemetery the band played slow, solemn music suited to the occasion. But on the way home the mood changed. Spirits lifted. Death had removed one of their members, but the living were glad to believe. The band played funeral music, improvising(即兴表演)on both the harmony and the melody of the tunes【C10】______at the funeral. This music made everyone want to dance. It was an early form of jazz.