Six String Guitar · Drop D Tuning (DADGBE)

Cø11♭9C Half-Diminished 11th Flat 9th

CRoot

D♯tone

F♯tone

A♯tone

C♯tone

Ftone

Formula 1 · ♭3 · ♭5 · ♭7 · ♭2 · 4 · Notes C · D♯ · F♯ · A♯ · C♯ · F

How to play it

Cø11♭9 fingering positions

Drop D Tuning (DADGBE), 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 Half-Diminished 11th Flat 9th guitar chord — 7th position (10 8 8 8 7 9) fretboard diagram in Drop D Tuning (DADGBE)

C Half-Diminished 11th Flat 9th guitar chord — 8th position (10 8 11 11 11 11) fretboard diagram in Drop D Tuning (DADGBE)

C Half-Diminished 11th Flat 9th guitar chord — 19th position (22 20 20 20 19 21) fretboard diagram in Drop D Tuning (DADGBE)

Read it as tab

Cø11♭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 Half-Diminished 11th Flat 9th guitar tab — 7th position (10 8 8 8 7 9) in Drop D Tuning (DADGBE)

C Half-Diminished 11th Flat 9th guitar tab — 8th position (10 8 11 11 11 11) in Drop D Tuning (DADGBE)

C Half-Diminished 11th Flat 9th guitar tab — 19th position (22 20 20 20 19 21) in Drop D Tuning (DADGBE)

Sound

How Cø11♭9 sounds

Consonance

1/ 5

Brightness

DarkBright

Character

Moods & genres

Moods

bleakhollow

Genres

experimental

Theory

Notes & relationships

NotesC · D♯ · F♯ · A♯ · C♯ · F

Formula (scale degrees)1 · ♭3 · ♭5 · ♭7 · ♭2 · 4

Same notes asCø♭9(add11)Co♭9(add11)

Explore

More ways to play C Half-Diminished 11th Flat 9th

Browse the rest of the C chords in this tuning, or open Cø11♭9 in the app for every voicing.

Cø11♭9 in other tunings:

See & hear Cø11♭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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