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A♭7♭9 chord

A♭ Dominant 7th Flat 9

Ab7b9 · Root

1Ab33C45Eb4b7Gb4b9B𝄫4
3C4b9C515b7

Every chord tone stacked from the root up.

Click keys to experiment with the chord

Notes

A♭ – C – E♭ – G♭ – B𝄫

Formula

1 – 3 – 5 – b7 – b9

Practice Note

A flat ninth gives the dominant a strong pull, especially as V7 in a minor key, where Phrygian dominant or the altered scale are common choices. The half-whole diminished scale suits resolutions to major; b9 and the guide tones resolve into the following chord.

Try next

Ab7 · SimplerAb13b9 · RicherAb7#9 · SiblingDbm · Resolves toEbm7b5 · ii in minorAdim7 · Same notes (upper)

About Ab7b9

The Ab7b9 chord sounds dark and dramatic, a staple of minor-key resolutions. Its notes are Ab, C, Eb, Gb, Bbb.

All Ab chords (61)

Triads

Ab — MajorAbm — MinorAbdim — DiminishedAbaug — AugmentedAbsus2 — Suspended 2ndAbsus4 — Suspended 4thAb5 — Power Chord

7ths

Ab7 — Dominant 7thAbmaj7 — Major 7thAbm7 — Minor 7thAbm7#5 — Minor 7th Sharp 5Abdim7 — Diminished 7thAbm7b5 — Half-Diminished 7thAb6 — Major 6thAbm6 — Minor 6thAb7sus4 — Dominant 7th Sus4Ab7sus2 — Dominant 7th Sus2

Extended

Ab9 — Dominant 9thAbmaj9 — Major 9thAbm9 — Minor 9thAbadd9 — Add 9Abadd11 — Add 11Abadd2 — Add 2Abadd#11 — Add Sharp 11Ab11 — Dominant 11thAb13 — Dominant 13thAb6/9 — 6/9Abmaj13 — Major 13thAbm(add2) — Minor Add 2Abm(add9) — Minor Add 9Abm(add11) — Minor Add 11AbmMaj7 — Minor Major 7thAbm11 — Minor 11thAbm13 — Minor 13thAbm6/9 — Minor 6/9Ab7#11 — Dominant 7th Sharp 11Ab9#11 — Dominant 9th Sharp 11Ab13#11 — Dominant 13th Sharp 11Ab9sus4 — Dominant 9th Sus4Ab13sus4 — Dominant 13th Sus4Abmaj7#11 — Major 7th Sharp 11Abmaj9#11 — Major 9th Sharp 11AbmMaj9 — Minor Major 9thAbm9b5 — Half-Diminished 9th

Altered

Ab7#9 — Dominant 7th Sharp 9Ab7b9#9 — Dominant 7th Flat 9 Sharp 9Ab13#9 — Dominant 13th Sharp 9Ab7#5 — Dominant 7th Sharp 5Ab7b5 — Dominant 7th Flat 5Ab7alt — Altered DominantAb7#9#5 — Dominant 7th #9 #5Ab7b9b5 — Dominant 7th b9 b5Ab7#9b5 — Dominant 7th #9 b5Ab7sus4b9 — Dominant 7th Sus4 Flat 9Ab9#5 — Dominant 9th Sharp 5Ab9b5 — Dominant 9th Flat 5Ab13b9 — Dominant 13th Flat 9Ab7b13 — Dominant 7th Flat 13Abaug7 — Augmented 7thAbdim(maj7) — Diminished Major 7thAbaugMaj7 — Augmented Major 7th