This could get messy, and I might need to elaborate, since I've somewhat lost the point of it all.
The key is C major
From my understanding, the 3 primary melodic minor scales are:
A (runs alongside C major)
F (III7alt)
Ab (V7alt)
I believe you use A melodic minor in the sense of Amin being the tonic, and C being the relative major.
When modulating up a minor 3rd
C's V = Eb's III
Eb's V = Gb's III
Gb's V = A's III
A's V = C's III
And vise versa
When modulating up a minor 6th
C & Eb = III & V of Ab
Ab & Cb = III & V of E
E & G = III & V of C
Major key + Parent scale of its parallel minor
the 2 primary dominants of the bVI of the original key, operating as the tonic.
(my head)
Ok so
I'm not even entirely sure what I'm asking here, but I feel like something is missing here.
** The minor iv sound stems from the IIIalt family.
F melodic minor = min iv of C
A melodic minor (which is operating as the tonic for C) can also be used as the min iv of E (b3,b6,7)
When I modulate in minor thirds, only one III/V alt is related to eachother, and the other one just sends you backwards.
When Ab has the V and III of C, then you move to C, Ab is completely missing from the categories mentioned so far, which are paralell/relative minor and the III/V dominants.
So Ab > C > E is essentially a 1 way street.
** If we backtrack to Fmel.min = C, with this relationship A mel.min = E.
This indicates that you can actually move in reverse.
Even without jazzing up the extentions, this fundamental web is allowing me to
- Use any V chord as a III (resolve to rel.minor, modulate up b3)
- III > V (above but in reverse - VI = new I)
- Turn a I and bIII into a III and V (modulate up b6 / down M3)
- Use any vi chord as a min iv (modulate P4 down?)
But this is where I've lost the pattern. I don't even know what the question is, but I'm hoping to get some insight on the subject. I'll stay online, so questions/clarifications are welcome and appreciated.