Five String Banjo · Open G (gDGBD)

Cø7♭9C Half-Diminished 7th Flat 9th

CRoot

D♯tone

F♯tone

A♯tone

C♯tone

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

How to play it

Cø7♭9 fingering positions

Open G (gDGBD), 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 7th Flat 9th guitar chord — 10th position (10 11 11 11 13) fretboard diagram in Open G (gDGBD)

C Half-Diminished 7th Flat 9th guitar chord — 10th position (10 11 11 13 11) fretboard diagram in Open G (gDGBD)

Read it as tab

Cø7♭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 7th Flat 9th guitar tab — 10th position (10 11 11 11 13) in Open G (gDGBD)

C Half-Diminished 7th Flat 9th guitar tab — 10th position (10 11 11 13 11) in Open G (gDGBD)

Sound

How Cø7♭9 sounds

Consonance

1/ 5

Brightness

DarkBright

Character

Moods & genres

Moods

bleakdissonant

Genres

jazzclassical

Theory

Notes & relationships

NotesC · D♯ · F♯ · A♯ · C♯

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

Same notes asCø♭9 Co♭9

Explore

More ways to play C Half-Diminished 7th Flat 9th

Browse the rest of the C chords in this tuning, or open Cø7♭9 in the app for every voicing.

Cø7♭9 in other tunings:

See & hear Cø7♭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.

Hear every chordMore voicingsEvery tuning & capoWorks offline

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