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Guitar chord · Dominant 13b9

Ab13b9 chord (Ab Dominant 13b9)

Dominant 13th with a flat 9th: a dominant chord that fits the half-whole diminished scale.

Notes AbCEbGbAF
Formula 1 3 5 ♭7 ♭9 13
Shapes 2 on this page

Ab13b9 chord shapes

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

6th String Root 4 x 4 2 1 1
5th String Root x 11 10 11 10 13

Interactive chord diagram

Ab13b9 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 Ab13b9

These scales start on Ab and contain every note of the chord, so they fit when Ab13b9 is the chord of the moment.

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Questions

What notes are in a Ab13b9 chord?
Ab13b9 is Ab, C, Eb, Gb, A, F: the 1, 3, 5, ♭7, ♭9, 13 of Ab.
How do you play Ab13b9 on guitar?
6th String Root: 4 x 4 2 1 1; 5th String Root: x 11 10 11 10 13 (low E to high E, x = don't play the string).
What scale goes with Ab13b9?
Scales on Ab that contain every note of Ab13b9: Ab Half-Whole Diminished, Ab Mixolydian b2.

Dominant 13b9 chords in every key

More Ab chords