Jazz leader of New Orleans' Camelia Brass Band, D'Jalma Ganier, taught Louis Armstrong to play trumpet; Armstrong would then popularize the New Orleans style of trumpet playing, and then expand it. Like Jelly Roll Morton, Armstrong is also credited with the abandonment of ragtime's stiffness in favor of swung notes. Armstrong, perhaps more than any other musician, codified the rhythmic technique of swing in jazz and broadened the jazz solo vocabulary. The Original Dixieland Jass Band made the music's first recordings early in 1917, and their "Livery Stable Blues" became the earliest released jazz record. That year, numerous other bands made
The Famous 1938 Carnegie Hall Jazz Concert of US$2.75 a seat (). The concert began with three contemporary numbers from the Goodman band—"Don't Be That Way", "Sometimes I'm Happy", and "One O'Clock Jump". They then played a history of jazz, starting with a Dixieland quartet performing "Sensation Rag", originally recorded by the Original Dixieland Jazz Band in 1918. Once again, the initial reaction of the audience, though polite, was tepid. Then came a jam session on "Honeysuckle Rose" featuring members of the Count Basie and Duke Ellington bands as guests. (The surprise of the session: Goodman handing a solo to Basie's guitarist Freddie Green, who was never