求翻译：在众多流行音乐中，爵士乐是出现最早并且是在世界上影响较广的一个乐种，爵士乐实际就是美国的民间音乐，欧洲教堂音乐、美国黑人小提琴和班卓传统音乐融合非洲吟唱及美国黑人劳动号子形成了最初的民间蓝调。拉格泰姆和民间蓝调构成了早期的爵士音乐。是什么意思？

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And in the multitudinous pop musics, jazz was appears is most early affects broad one happy kind in the world, jazz is actually US's folk music, European church music, the black American violin and banjo tradition music fuses Africa to recite and the black American work song has formed the initial f

In a number of popular music, jazz is the earliest and is a wider influence of a kind in the world, jazz is actually United States folk music, church music in Europe and the United States black violin and traditional African chanting and music integration United States blacks work song form the orig

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