Six String Guitar · Drop D Tuning (DADGBE)

Cø9C Half-Diminished 9th

CRoot

D♯tone

F♯tone

A♯tone

Dtone

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

How to play it

Cø9 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 9th guitar chord — Open (x 3 1 3 3 2) fretboard diagram in Drop D Tuning (DADGBE)

C Half-Diminished 9th guitar chord — 2nd position (x 3 0 3 4 2) fretboard diagram in Drop D Tuning (DADGBE)

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

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

C Half-Diminished 9th guitar chord — 9th position (10 9 12 x 11 11) fretboard diagram in Drop D Tuning (DADGBE)

C Half-Diminished 9th guitar chord — 9th position (10 9 12 11 11 11) fretboard diagram in Drop D Tuning (DADGBE)

C Half-Diminished 9th guitar chord — 10th position (10 x 12 11 11 11) fretboard diagram in Drop D Tuning (DADGBE)

C Half-Diminished 9th guitar chord — 10th position (10 x 13 11 11 10) fretboard diagram in Drop D Tuning (DADGBE)

Read it as tab

Cø9 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 guitar tab — Open (x 3 1 3 3 2) in Drop D Tuning (DADGBE)

C Half-Diminished 9th guitar tab — 2nd position (x 3 0 3 4 2) in Drop D Tuning (DADGBE)

C Half-Diminished 9th guitar tab — 7th position (10 x 8 8 7 10) in Drop D Tuning (DADGBE)

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

C Half-Diminished 9th guitar tab — 9th position (10 9 12 x 11 11) in Drop D Tuning (DADGBE)

C Half-Diminished 9th guitar tab — 9th position (10 9 12 11 11 11) in Drop D Tuning (DADGBE)

C Half-Diminished 9th guitar tab — 10th position (10 x 12 11 11 11) in Drop D Tuning (DADGBE)

C Half-Diminished 9th guitar tab — 10th position (10 x 13 11 11 10) in Drop D Tuning (DADGBE)

Sound

How Cø9 sounds

Consonance

2/ 5

Brightness

DarkBright

Character

Moods & genres

Moods

fragiletensebittersweet

Genres

jazz

Theory

Notes & relationships

NotesC · D♯ · F♯ · A♯ · D

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

Same notes asCm9♭5 Cø7(add9)

Explore

More ways to play C Half-Diminished 9th

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

Cø9 in other tunings:

See & hear Cø9 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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