英语翻译（1）George Gershwin,born in 1998,was one of America’s gre

英语翻译
（1）George Gershwin,born in 1998,was one of America’s greatest composers.He published his first song when the was eighteen years old.During the next twenty years he wrote more than five hundred songs.
（2）Many of Gershwin’s songs were first written for musical plays performed in theatres inNew York City.These palys were a popular form of entertainment in the 1920s and 1930s.Many of his songs have remained popular as ever.Over the years they have been sung and played in every possible way — from jazz to country.
（3）In the 1920s there was a debate in theUnited Statesabout jazz music.Could jazz,some people asked,be considered serious music?In 1924 jazz musician and orchestra leader Paul Whiteman decided to organize a special concert to show that jazz was serious music.Gershwin agreed to compose something for the concert before he realized he had just a few weeks to do it.And in that short time,he composed a piece for piano and orchestra which he called Rhapsody in Blue.Gershwin himself played the piano at the concert.The audience were thrilled when they heard his music.It made him world-famous and showed that jazz music could be both serious and popular.
请标准翻译第（3）段（不要机器翻译的）,

在1920年代,在美国发生了一次有关爵士乐的辩论,一些人问：爵士乐可以被认为是严肃音乐吗?1924年,爵士乐音乐家和乐团领导人保罗 怀特曼决定组织一个特别音乐会以展示爵士乐是严肃音乐.格什温同意为这个音乐会做些曲子,然后意识到他只有几周的时间来完成.在这短短的时间里,他为钢琴和乐队谱写了一首曲子,曲名为《蓝色狂想曲》.格什温亲自在音乐会上演奏了钢琴,听众们（观众们）在听到这首曲子时都极为兴奋/激动,这支曲子使他知名于全世界,同时也说明爵士乐可以既是严肃音乐,也是流行音乐.