64.29Pentatonic #3 — minor pentatonic a minor third above a dominant

Now we enter altered-dominant territory.

Take:

B♭ minor pentatonic

B♭ D♭ E♭ F A♭.

Put:

G bass.

Functions:

B♭ = ♯9 D♭ = ♭5/♯11 E♭ = ♭13 F = ♭7 A♭ = ♭9.

Notice what's missing:

B = 3.

But if LH/middle voice supplies B:

you have almost the entire altered-dominant color.