Six String Guitar · Open A Tuning (EAEAC♯E)

Co7♭9C Diminished 7th Flat 9th

CRoot

D♯tone

F♯tone

Atone

C♯tone

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

How to play it

Co7♭9 fingering positions

Open A Tuning (EAEAC♯E), 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 Diminished 7th Flat 9th guitar chord — 2nd position (x 3 2 4 2 5) fretboard diagram in Open A Tuning (EAEAC♯E)

C Diminished 7th Flat 9th guitar chord — 2nd position (x 3 5 4 2 2) fretboard diagram in Open A Tuning (EAEAC♯E)

C Diminished 7th Flat 9th guitar chord — 6th position (8 6 9 9 8 x) fretboard diagram in Open A Tuning (EAEAC♯E)

C Diminished 7th Flat 9th guitar chord — 6th position (8 9 9 6 8 x) fretboard diagram in Open A Tuning (EAEAC♯E)

C Diminished 7th Flat 9th guitar chord — 6th position (8 6 9 9 8 8) fretboard diagram in Open A Tuning (EAEAC♯E)

C Diminished 7th Flat 9th guitar chord — 6th position (8 9 9 6 8 8) fretboard diagram in Open A Tuning (EAEAC♯E)

C Diminished 7th Flat 9th guitar chord — 8th position (8 x 9 9 8 11) fretboard diagram in Open A Tuning (EAEAC♯E)

C Diminished 7th Flat 9th guitar chord — 8th position (8 9 9 x 8 11) fretboard diagram in Open A Tuning (EAEAC♯E)

Read it as tab

Co7♭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 Diminished 7th Flat 9th guitar tab — 2nd position (x 3 2 4 2 5) in Open A Tuning (EAEAC♯E)

C Diminished 7th Flat 9th guitar tab — 2nd position (x 3 5 4 2 2) in Open A Tuning (EAEAC♯E)

C Diminished 7th Flat 9th guitar tab — 6th position (8 6 9 9 8 x) in Open A Tuning (EAEAC♯E)

C Diminished 7th Flat 9th guitar tab — 6th position (8 9 9 6 8 x) in Open A Tuning (EAEAC♯E)

C Diminished 7th Flat 9th guitar tab — 6th position (8 6 9 9 8 8) in Open A Tuning (EAEAC♯E)

C Diminished 7th Flat 9th guitar tab — 6th position (8 9 9 6 8 8) in Open A Tuning (EAEAC♯E)

C Diminished 7th Flat 9th guitar tab — 8th position (8 x 9 9 8 11) in Open A Tuning (EAEAC♯E)

C Diminished 7th Flat 9th guitar tab — 8th position (8 9 9 x 8 11) in Open A Tuning (EAEAC♯E)

Sound

How Co7♭9 sounds

Consonance

1/ 5

Brightness

DarkBright

Character

Moods & genres

Moods

menacinggrating

Genres

film score

Theory

Notes & relationships

NotesC · D♯ · F♯ · A · C♯

Formula (scale degrees)1 · ♭3 · ♭5 · 6 · ♭2

Explore

More ways to play C Diminished 7th Flat 9th

Browse the rest of the C chords in this tuning, or open Co7♭9 in the app for every voicing.

Co7♭9 in other tunings:

See & hear Co7♭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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