Blues

POA

Blues music was a major influence in the development of jazz, and such tunes are extremely common in the jazz repertoire. (In addition to the chord progression, jazz players borrowed many other stylistic devices from the blues, such as blue notes, blues-like phrasing of melodies, and blues riffs.)

A jazz blues will usually feature a more sophisticated -- or at any rate a different -- treatment of the harmony than a traditional, "blues" blues would, but the underlying features of the standard 12-bar jazz progression remain discernible. One of the main ways the jazz musician accomplishes this is through the use of chord substitutions: a chord in the original progression is replaced by one or more chords which have the same general "sense" or function.

An important example of this occurs in the 9th and 10th bars, where the usual blues progression is almost always replaced by the typical jazz cycle-of-fifths progression. One well-known artist that sang this form of jazz was Billy Holiday.