- 问题详情:Nooneknowsexactlywhenjazzwasinvented,orbywhom.Butitissaidthatitbeganintheearly1900s.Jazzwasanewkindofmusic,forAmericaandtheworld,andNewOrleanswasitsbirthplace.Whowerethejazzpioneers?Mostwereblacks.Thismusicwasnotwrittendown,andatfirstonlyblac...
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