Minor ii-V-i with ♭9

iiø → V7(♭9) → i, the natural altered V for the minor key

The minor mode begs for the ♭9 on its V chord. The ♭9 of V is the same pitch as the ♭6 of the minor i — diatonic to the harmonic minor scale. So when the dominant resolves to i, the ♭9 on the V (A♭ over G7 going to Cm) is the strongest possible altered tension, and it resolves chromatically down to the 5 of the i (G in Cm).

Same iiø shell as minor_ii_v_i (#10). The V chord becomes a 3-note voicing: shell (3 + ♭7) plus the ♭9 — stacked on top where the hand allows, tucked inside the shell where it wouldn't. The i grows to three notes (♭3 + 5 + ♭7) so the ♭9's half-step resolution down to the 5 of i actually sounds.

iiø

Half-diminished shell (♭3 + ♭7). Same as minor_ii_v_i.

V7(♭9)

Shell + ♭9. On top in A-form keys (C7: E + B♭ + D♭); tucked inside in B-form keys (G7: F + A♭ + B) so the hand never spans past a 6th.

i

♭3 + 5 + ♭7. The 5 receives the ♭9's resolution.

Cm minor

Fm minor

B♭m minor

E♭m minor

A♭m minor

D♭m minor

F♯m minor

Bm minor

Em minor

Am minor

Dm minor

Gm minor

The Daily Drill

Hear the leading tone

3 minPlay one key. Hold the V chord and find the ♭9 — a half-step above the V's root, on top in some keys, tucked inside in others. That note is the strongest tension in the minor mode's cadence.
10 minCycle three keys at a time. The ♭9 of V (A♭ in G7) is the ♭6 of the minor i (A♭ in Cm) — same pitch, different role. Hear how it pivots between the two chords.
4 minCompare to minor_ii_v_i (#10): play both versions back-to-back in the same key. Plain V7 vs V7♭9. The ♭9 adds tension without changing function.
3 minApply: play Beautiful Love, Whisper Not, or any minor-key tune with this V7♭9 voicing instead of the plain V7. Most jazz pianists default to the ♭9 in minor keys; it's the idiomatic choice.

♭9 resolution

The ♭9 of V (e.g. A♭ on G7) resolves down a half-step to the 5 of i (G in Cm) — listen for it landing in the middle of the i chord. The other voices do the same work as the plain minor cadence: the ♭7 of V (F in G7) falls a whole step to the ♭3 of i (E♭), and the 3 of V (B) slips down a half step to the ♭7 of i (B♭). Three voices, three downward resolutions — two by half step, one by whole step.

♭9 sits above. Resolution sits below. The minor-mode cadence in three voices.

80 bpm

Sound