Compare
Jazz Minor vs Melodic Minor
Identical going up, divergent coming down. Classical melodic minor reverts to natural minor; jazz minor keeps the raised 6 + 7 in both directions.
Jazz Minor
R
♭2
2
♭3
3
4
♭5
5
♭6
6
♭7
7
Melodic Minor
R
♭2
2
♭3
3
4
♭5
5
♭6
6
♭7
7
What's different
In both
R2♭34567
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