Cø11♯9C Half-Diminished 11th Sharp 9th
CRoot
D♯tone
F♯tone
A♯tone
D♯tone
Ftone
Formula 1 · ♭3 · ♭5 · ♭7 · ♭3 · 4 · Notes C · D♯ · F♯ · A♯ · D♯ · F
How to play it
Cø11♯9 fingering positions
Open D (f♯DF♯AD) · 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).
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.
Sound
How Cø11♯9 sounds
Consonance
1/ 5
Brightness
DarkBright
Character
Moods & genres
Moods
thickmurky
Genres
jazz
Theory
Notes & relationships
NotesC · D♯ · F♯ · A♯ · D♯ · F
Formula (scale degrees)1 · ♭3 · ♭5 · ♭7 · ♭3 · 4
Explore
More ways to play C Half-Diminished 11th Sharp 9th
Browse the rest of the C chords in this tuning, or open Cø11♯9 in the app for every voicing.
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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