Jazz is an improvisational skill by the performed and the instrumentalist. The performed repeats the chord progression of a composition, while the instrumentalist imitates the black vocal styles and tonal effects. Thus, two formal patterns of improvisation were brought about. The second pattern has roots deep in African American folk music. It is in the blues form and has a fairly standard chord progression.
Jazz music is idiosyncratic by nature where the performer creates the rhythm.
There is truly no incorrect way to play Jazz. Typically instrumented by piano, string bass, and drums, jazz began to take charge of the new era of music. Ragtime being the predecessor of jazz, the new type of music began to evolve in the saloons along the Mississippi River. However, in the early 1920's there was a rapid migration of jazz artists to Chicago. This new evolution of jazz emphasized the soloist, added the use of the saxophone, and was known to have a thicker texture and more complex, tense rhythms.