Six String Guitar · Open A Tuning (EAEAC♯E) · Capo 3

C+11♭9C Augmented 11th Flat 9th

CRoot

Etone

G♯tone

A♯tone

C♯tone

Ftone

Formula 1 · 3 · ♭6 · ♭7 · ♭2 · 4 · Notes C · E · G♯ · A♯ · C♯ · F

How to play it

C+11♭9 fingering positions

Open A Tuning (EAEAC♯E) · Capo 3, low E on the left. Each dot is colour-coded by note — the ringed dot is the root. Numbers below show the fret per string (x = muted).

C Augmented 11th Flat 9th guitar chord — 3rd position (5 5 3 4 4 6) fretboard diagram in Open A Tuning (EAEAC♯E) · Capo 3

C Augmented 11th Flat 9th guitar chord — 3rd position (5 5 6 4 4 3) fretboard diagram in Open A Tuning (EAEAC♯E) · Capo 3

C Augmented 11th Flat 9th guitar chord — 15th position (17 17 15 16 16 18) fretboard diagram in Open A Tuning (EAEAC♯E) · Capo 3

C Augmented 11th Flat 9th guitar chord — 15th position (17 17 18 16 16 15) fretboard diagram in Open A Tuning (EAEAC♯E) · Capo 3

Read it as tab

C+11♭9 guitar tab

The same voicings in tablature — high e on top, low E on the bottom. Each fret number is colour-coded by note; the ringed number is the root, × means don’t play that string.

C Augmented 11th Flat 9th guitar tab — 3rd position (5 5 3 4 4 6) in Open A Tuning (EAEAC♯E) · Capo 3

C Augmented 11th Flat 9th guitar tab — 3rd position (5 5 6 4 4 3) in Open A Tuning (EAEAC♯E) · Capo 3

C Augmented 11th Flat 9th guitar tab — 15th position (17 17 15 16 16 18) in Open A Tuning (EAEAC♯E) · Capo 3

C Augmented 11th Flat 9th guitar tab — 15th position (17 17 18 16 16 15) in Open A Tuning (EAEAC♯E) · Capo 3

Sound

How C+11♭9 sounds

Consonance

1/ 5

Brightness

DarkBright

Character

Moods & genres

Moods

volatiledense

Genres

experimental

Theory

Notes & relationships

NotesC · E · G♯ · A♯ · C♯ · F

Formula (scale degrees)1 · 3 · ♭6 · ♭7 · ♭2 · 4

Explore

More ways to play C Augmented 11th Flat 9th

Browse the rest of the C chords in this tuning, or open C+11♭9 in the app for every voicing.

C+11♭9 in other tunings:

See & hear C+11♭9 in Chordology

The app shows every voicing across guitar, piano, bass, banjo and ukulele — in any tuning, with a capo, and you can play every chord back. All offline.

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