Six String Guitar · Open G Tuning (DGDGBD)

Cø9(add4)C Half-Diminished 9th Added 4th

CRoot

D♯tone

Ftone

F♯tone

A♯tone

Dtone

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

How to play it

Cø9(add4) 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 Added 4th guitar chord — 10th position (10 10 12 11 11 13) fretboard diagram in Open G Tuning (DGDGBD)

C Half-Diminished 9th Added 4th guitar chord — 10th position (10 10 13 11 11 12) fretboard diagram in Open G Tuning (DGDGBD)

Read it as tab

Cø9(add4) 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 Added 4th guitar tab — 10th position (10 10 12 11 11 13) in Open G Tuning (DGDGBD)

C Half-Diminished 9th Added 4th guitar tab — 10th position (10 10 13 11 11 12) in Open G Tuning (DGDGBD)

Sound

How Cø9(add4) sounds

Consonance

1/ 5

Brightness

DarkBright

Character

Moods & genres

Moods

denseuneasy

Genres

experimental

Theory

Notes & relationships

NotesC · D♯ · F · F♯ · A♯ · D

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

Explore

More ways to play C Half-Diminished 9th Added 4th

Browse the rest of the C chords in this tuning, or open Cø9(add4) in the app for every voicing.

Cø9(add4) in other tunings:

See & hear Cø9(add4) 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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