He invented scat singing . To the untrained , scat singing sounds like the singer forgot the lyrics . Nothing is further then the truth . Many hours of rehearsal goes into scat singing . Armstrong 's progression of jazz music impressed King Oliver . Louis Armstrong moved to Chicago with Oliver in 1918 . New Orleans jazz was developed first . King Oliver and Louis Armstrong developed Chicago jazz , in he Kid Ory band . New Orleans style uses wind instruments Chicago , uses string instruments , or a combination...











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