The notes of the melodic minor scale are somewhat the same as the natural minor scale notes. This time, both the 6th note and the 7th note are raised above the corresponding notes of the natural minor scale. As you can see bellow this is valid only when playing the melodic minor scale upward. When playing the melodic minor scale downward the notes are exactly the same as the descending notes from the natural minor scale.
The pattern that give this scale its specific flavor is:
-upward: WS - HS - WS - WS - WS - WS - HS
-downward (see natural minor scales
Download the Melodic minor scales pdf