The Red Hot Jazz Archive
The music called Jazz was born sometime around 1895 in New Orleans. It combined elements of Ragtime, marching band music and Blues. What differentiated Jazz from these earlier styles was the widespread use of improvisation, often by more than one player at a time. Jazz represented a break from Western musical traditions, where the composer wrote a piece of music on paper and the musicians then tried their best to play exactly what was in the score. In a Jazz piece, the song is often just a starting point or frame of reference for the musicians to improvise around. The song might have been a popular ditty or blues that they didn't compose, but by the time they were finished with it they had composed a new piece that often bore little resemblance to the original song.