9b13 Chord on guitar

A 9b13 chord is a dominant 9th chord with a flat thirteenth, a dominant with both a bright and a dark note.

About the 9b13 Chord

C9b13 is C, E, G, Bb, D and Ab.

Its notes come from Mixolydian b6, the fifth mode of melodic minor.

Use it as a V chord before a minor chord.

Intervals

• 1: Root, 0 semitones above the root
• 3: Major 3rd, 4 semitones above the root
• 5: Perfect 5th, 7 semitones above the root
• b7: Minor 7th, 10 semitones above the root
• 9: 9th, 14 semitones above the root
• b13: Flat 13th, 20 semitones above the root

9b13 Chord charts in all 12 keys

Each chart shows the strings from the thick low E on the left to the thin high e on the right. Numbers in the dots are fingers: 1 index, 2 middle, 3 ring, 4 little, T thumb. × marks a muted string and ○ an open one. A bar across strings is a barre.

Scales to play over C9b13

Each of these scales, started on the root of C9b13, holds every note of the chord:

• C Lydian Minor scale
• C Hindu scale
• C Ten Tone Dominant scale
• C Ten Tone Harmonic scale

More chord types

• 9#11 Chord
• 13#11 Chord
• All chord types