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Guitar chord · Dominant 9b5

Bb9b5 chord (Bb Dominant 9b5)

Dominant 9th with a lowered 5th: a dominant chord whose notes all fit the whole-tone scale.

Notes BbDFbAbC
Formula 1 3 ♭5 ♭7 9
Shapes 2 on this page

Bb9b5 chord shapes

Tap a diagram to strum it. Numbers are fingers: 1 index, 2 middle, 3 ring, 4 pinky. Blue dots are the root, Bb.

6th String Root 6 5 6 5 5 x
5th String Root x 1 0 1 1 0

Interactive chord diagram

Bb9b5 on the fretboard

STR OP 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 E A D G B E ✕ ✕

Tap any note to hear it.

Scales to play over Bb9b5

These scales start on Bb and contain every note of the chord, so they fit when Bb9b5 is the chord of the moment.

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Questions

What notes are in a Bb9b5 chord?
Bb9b5 is Bb, D, Fb, Ab, C: the 1, 3, ♭5, ♭7, 9 of Bb.
How do you play Bb9b5 on guitar?
6th String Root: 6 5 6 5 5 x; 5th String Root: x 1 0 1 1 0 (low E to high E, x = don't play the string).
What scale goes with Bb9b5?
Scales on Bb that contain every note of Bb9b5: Bb Lydian Dominant, Bb Whole Tone, Bb Leading Whole Tone, Bb Major Locrian, Bb Lydian Dominant b6, Bb Prometheus.

Dominant 9b5 chords in every key

More Bb chords