Six String Guitar · Open G Tuning (DGDGBD)

Cø9♯5C Half-Diminished 9th Sharp 5th

CRoot
D♯tone
F♯tone
G♯tone
A♯tone
Dtone

Formula 1 · ♭3 · ♭5 · ♭6 · ♭7 · 2  ·  Notes C · D♯ · F♯ · G♯ · A♯ · D

How to play it

Cø9♯5 fingering positions

Open G Tuning (DGDGBD), 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 9th Sharp 5th guitar chord — 10th position (10 11 13 13 11 12) fretboard diagram in Open G Tuning (DGDGBD)
C Half-Diminished 9th Sharp 5th guitar chord — 10th position (10 13 13 11 11 12) fretboard diagram in Open G Tuning (DGDGBD)
Read it as tab

Cø9♯5 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 9th Sharp 5th guitar tab — 10th position (10 11 13 13 11 12) in Open G Tuning (DGDGBD)
C Half-Diminished 9th Sharp 5th guitar tab — 10th position (10 13 13 11 11 12) in Open G Tuning (DGDGBD)
Sound

How Cø9♯5 sounds

Consonance
1/ 5
Brightness
DarkBright
Character

Moods & genres

Moods
murkyfragile
Genres
jazz
Theory

Notes & relationships

NotesC · D♯ · F♯ · G♯ · A♯ · D
Formula (scale degrees)1 · ♭3 · ♭5 · ♭6 · ♭7 · 2
Explore

More ways to play C Half-Diminished 9th Sharp 5th

Browse the rest of the C chords in this tuning, or open Cø9♯5 in the app for every voicing.

Cø9♯5 in other tunings:

StandardDrop DDrop COpen AOpen DOpen EOpen CDADGADHalf-Step Down

See & hear Cø9♯5 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.

Hear every chordMore voicingsEvery tuning & capoWorks offline
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