The backdoordominant from Inside Moves, taken at its word: b7⁷ of home is the real 5⁷ of the key a minor 3rd up. Resolve honestly and you've relocated — a favorite lift into final choruses.
hear it in soul final-chorus lifts · standards endings
Lead-in — how players set it up4 → 4- sets the borrowed mood before b7⁷ commits.Or skip the 4- — bare b7⁷ off the tonic still opens the door.Or full backdoor ii–V: 4-⁷ then b7⁷, textbook Coker.Follow — where it usually goesArrive on new 1 and cadence there — the visit becomes residence.Furnish up there: new 6-⁷ and new 4Δ7 make it a residence.Or backdoor again — minor 3rds stack into a full circuit.
Blues vocabulary crosses this border free — the b3 and b7 you were bending are diatonic on the other side.Target tones (in C)Fm7 — lean on Ab (b3) · Eb (b7)Bb7 — lean on D (3) · Ab (b7)Eb — lean on G (3)Half-step wiresEb ↘ D · D → Eb · Ab ↘ GAcross the borderhold these into Eb: G