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
Dixieland Jass Band One-Step and played by the Original Dixieland Jass Band" omitted the phrase "Composed and played by". Max Hart, the manager of the ODJB, made an agreement with J. W. Stern in 1917 for the publication rights to "Dixieland Jass Band One- Step." Nick LaRocca wrote to Eddie Edwards on November 8, 1929: "Ed, I want you to look up Max Hart and see if he will sign the Dixieland one step to one of us so we can get behind the publisher to settle up with us, on royalty due band. Suppose you go and see J. W. Stern or his