填空题

Jazz began in the early 20th century as a kind of music of black Americans. It was (36) for singing, for dancing, and for entertainment and atmosphere at parties or social (37) Jazz has continued to develop and has produced some of the United States’ leading singers, instrumentalists, and (38) . Today, it’s (39) by many to be America’s art music. It has also (40) almost every other kind of music in America, Europe, and even the (41) Jazz represents a (42) of musical elements from Africa and from Europe. Jazz uses some European ideas of (43) and melody, but the rhythms’ are mom African in origin. And Jazz is polyrhythmic, (44) . The most important feature of Jazz is improvisation. (45) .Jazz musicians have learned to improvise so well that they can make up excellent melodies as they play. A good Jazz player seldom plays anything the same way twice. (46) .