The chord barely moves; a single inner voice walks 5 → #5 → 6 → b7 and drags the harmony to 4. All the drama of chromaticism with your thumb planted on the same root.
hear it in “For Once in My Life” — the climbing inner voice
Lead-in — how players set it upNeeds a parked 1 so the climbing voice is the only motion.From 4 falling home — the climb starts from stillness.Or begin mid-line for urgency: aug straight to 6.Follow — where it usually goes1⁷ tips into 4; from there the borrowed-4- exit shines.On 4, hand the line to 4-: the voice keeps falling, b6 to 5.Or loop the ladder — reset to 1 and climb again.
The climbing inner line IS the melody: 5, ♯5, 6 (and back) — everything else is accompaniment.Target tones (in C)C — lean on E (3)C+ — lean on E (3)C6 — lean on E (3)C7 — lean on E (3) · Bb (b7)F — lean on A (3)Half-step wiresG → G# · G# ↘ G · A → Bb · E → F · Bb ↘ A