This is a Locrian mode with a "twist" so-to-speak. The difference between the Locrian and the Super Locrian is that the fourth interval(C)is flatted on the Super Locrian Mode(Cb). The Super Locrian goes by several names which are:
Diminished Whole Tone scale
Pomeroy scale
Altered Dominant scale
Ravel scale
Here's the scale (ascending):
G, Ab, Bb, Cb, Db, Eb, F
Notice if you run the scale from Ab to Ab, you'd complete the Ab Melodic Minor scale.
Here is one way that you can apply this mode in between chords. For instance, let's say you are on a 5 chord, and you're going back to 1. But, in between 5 and 1 there is some space you need to fill. You can pick the Super Locrian Mode (beginning on G) and just run it until you are ready to play your one chord again. The trick is to pick a mode that once finished ends on the 1, 3, 5, 7, or 9th interval when you play your 1 chord.
Illustration:
Key C LH/RH
G / F-Ab-Cb(5)
?
C / E-A-D(1)
Now, which mode would fit? The 1 chord contains the notes C, E, G, B, & D. Remember I said the trick is to pick a mode that once finished, it ends when you play your 1 chord. Since one of the notes of the 1 chord is G, we'll pick a mode that starts with a G. One mode that fits that is the Super Locrian mode. So, let's use it:
4/4 time count in [ ]
[1] G / F-Ab-Cb (5)
[an] / G
[a] / Ab
[2] / Bb
[e] / Cb
[an] / Db
[a] / Eb
[3] / F
[e] / G
[an] / Ab
[a] / Bb
[4] / Cb
[e] / Db
[an] / Eb
[a] / F
[1] C / G [E-A-D]<- chord
There are more, but I'll wait and see if anyone likes the one above.
Take it slow and work with it. You should see that once you finish the Super Locrian mode, you'll land perfectly on the C major chord.
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