This is the last of the variations of Etude 6. The jazz melodic minor is formed from the the -9 of the V7 chord. For example, Db minor over C7. This is probably the most common use of the jazz minor scale, as it has many color tension possibilities, and is by default the most tense and dynamic of the 4 melodic minor scales I’ve used for this short series of etudes. This is the conceptual foundation of my book, Melodic Minor Scale Jazz Studies: Tonal Organizations and Applications Over Dominant 7th Chords, in which it is explored in great detail.