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
Jazz Hot reestablished with Panassié as President and Charles Delaunay as Secretary General. The club was primarily interested in Dixieland recordings, revival of Dixieland — which had lost popularity due to the swing craze of the 1930s — record listening sessions, and camaraderie among like-mined enthusiasts. Panassié and Delaunay were the founders of the "Jazz Hot." Before World War II, "Jazz Hot" was instrumental in the club's efforts to curate, restore, and import live and recorded Dixieland. The magazine endured under the auspices of the Hot Club of France for 45 issues — the entire 32 issues before World War II and