3559 / 18210 · Workshop 17 — “All of Me”: Secondary Dominants Everywhere, Turning a Simple Tune into a Functional-Harmony Laboratory← prev⊞ allnext →
17.38Level 18 — tritone substitutions
Now add one.
E7’s tritone substitute:
B♭7
leading to Am.
Bass:
B♭ → A.
A7’s substitute:
E♭7
leading to Dm.
Bass:
E♭ → D.
D7’s substitute:
A♭7
leading to G.
Bass:
A♭ → G.
Notice the beautiful semitone approaches.