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Bb9b5 chord

Bb Dominant 9th Flat 5

Bb9b5 · Piano chord

1Bb33D4b5Fb4b7Ab49C5
C3C43b59C51b7

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Notes

Bb – D – Fb – Ab – C

Formula

1 – 3 – b5 – b7 – 9

Practice Note

The lowered fifth gives the dominant ninth a tense, altered color. It can resolve as a dominant chord, with the third and flat seventh guiding the voice leading.

Try next

Bb7b5 · SimplerBb9 · SiblingBb9#11 · Close relativeEbmaj7 · Resolves to

About Bb9b5

The Bb9b5 chord sounds distinctive, with a dominant 9th flat 5 character. Its notes are Bb, D, Fb, Ab, C.

All Bb chords (58)

Triads

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

7ths

Bb7 — Dominant 7thBbmaj7 — Major 7thBbm7 — Minor 7thBbdim7 — 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 — 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 5Bb13b9 — Dominant 13th Flat 9Bb7b13 — Dominant 7th Flat 13Bbaug7 — Augmented 7thBbdim(maj7) — Diminished Major 7thBbaugMaj7 — Augmented Major 7th