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B♭13♭9 chord

B♭ Dominant 13th Flat 9

Bb13b9 · Root

1Bb33D45F4b7Ab4b9Cb513G5
C435b9C5131b7

Every chord tone stacked from the root up.

Click keys to experiment with the chord

Notes

B♭ – D – F – A♭ – C♭ – G

Formula

1 – 3 – 5 – b7 – b9 – 13

Practice Note

This dominant color is associated with the half-whole diminished scale and commonly resolves to a major chord; it is not a standard minor-key ii–V–i sound because its natural 13 clashes with the minor tonic’s b6. The 5th is a frequent omission in piano voicings, while the b9 and guide tones carry the tension.

Try next

Bb7b9 · 7b9Bb13 · 13Bb7#9 · 7#9Bb7alt · 7altE7 · Tritone substitutionEbmaj7 · Resolution

About Bb13b9

The Bb13b9 chord sounds distinctive, with a dominant 13th flat 9 character. Its notes are Bb, D, F, Ab, Cb, G. This chord is commonly heard in jazz.

Jazz
All Bb chords (61)

Triads

Bb — MajorBbm — MinorBbdim — DiminishedBbaug — AugmentedBbsus2 — Suspended 2ndBbsus4 — Suspended 4thBb5 — Power Chord

7ths

Bb7 — Dominant 7thBbmaj7 — Major 7thBbm7 — Minor 7thBbm7#5 — Minor 7th Sharp 5Bbdim7 — Diminished 7thBbm7b5 — Half-Diminished 7thBb6 — Major 6thBbm6 — Minor 6thBb7sus4 — Dominant 7th Sus4Bb7sus2 — Dominant 7th Sus2

Extended

Bb9 — Dominant 9thBbmaj9 — Major 9thBbm9 — Minor 9thBbadd9 — Add 9Bbadd11 — Add 11Bbadd2 — Add 2Bbadd#11 — Add Sharp 11Bb11 — Dominant 11thBb13 — Dominant 13thBb6/9 — 6/9Bbmaj13 — Major 13thBbm(add2) — Minor Add 2Bbm(add9) — Minor Add 9Bbm(add11) — Minor Add 11BbmMaj7 — Minor Major 7thBbm11 — Minor 11thBbm13 — Minor 13thBbm6/9 — Minor 6/9Bb7#11 — Dominant 7th Sharp 11Bb9#11 — Dominant 9th Sharp 11Bb13#11 — Dominant 13th Sharp 11Bb9sus4 — Dominant 9th Sus4Bb13sus4 — Dominant 13th Sus4Bbmaj7#11 — Major 7th Sharp 11Bbmaj9#11 — Major 9th Sharp 11BbmMaj9 — Minor Major 9thBbm9b5 — Half-Diminished 9th

Altered

Bb7#9 — Dominant 7th Sharp 9Bb7b9#9 — Dominant 7th Flat 9 Sharp 9Bb13#9 — Dominant 13th Sharp 9Bb7b9 — Dominant 7th Flat 9Bb7#5 — Dominant 7th Sharp 5Bb7b5 — Dominant 7th Flat 5Bb7alt — Altered DominantBb7#9#5 — Dominant 7th #9 #5Bb7b9b5 — Dominant 7th b9 b5Bb7#9b5 — Dominant 7th #9 b5Bb7sus4b9 — Dominant 7th Sus4 Flat 9Bb9#5 — Dominant 9th Sharp 5Bb9b5 — Dominant 9th Flat 5Bb7b13 — Dominant 7th Flat 13Bbaug7 — Augmented 7thBbdim(maj7) — Diminished Major 7thBbaugMaj7 — Augmented Major 7th