14.27A fascinating relationship: dominant ♭9
Take G7♭9:
G B D F A♭
Remove the root G.
What remains?
B D F A♭
That's:
B°7
So:
B°7 is the upper structure of G7♭9.
This is extremely important.
It explains why:
B°7 → C
has such strong dominant function.
Take G7♭9:
G B D F A♭
Remove the root G.
What remains?
B D F A♭
That's:
B°7
So:
B°7 is the upper structure of G7♭9.
This is extremely important.
It explains why:
B°7 → C
has such strong dominant function.