Reharmonizing and arranging a jazz tune requires the use of many concepts and skills.
In this reharm careful attention was taken in keeping the original melody. An analysis of the harmonic progression is essential in finding new chords that will fit the melody and still reflect the original chord changes giving the song a new color.
Also compositional skills should be used to give consistency to the arrangement, for example: in this arrangement the descending scale pattern that makes up the melody was used throughout the entire piece in parallel and contrary motion in many different voices.