Six String Guitar · Drop C Tuning (CGCFAD)

Ao9A Diminished ninth

F♯Root
Atone
Ctone
D♯tone
G♯tone

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

How to play it

Ao9 fingering positions

Drop C Tuning (CGCFAD), 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).

A Diminished ninth guitar chord — Open (x 2 0 1 2 1) fretboard diagram in Drop C Tuning (CGCFAD)
A Diminished ninth guitar chord — 6th position (9 x 6 7 6 9) fretboard diagram in Drop C Tuning (CGCFAD)
A Diminished ninth guitar chord — 7th position (9 8 x 7 9 9) fretboard diagram in Drop C Tuning (CGCFAD)
A Diminished ninth guitar chord — 9th position (9 11 11 10 x 10) fretboard diagram in Drop C Tuning (CGCFAD)
A Diminished ninth guitar chord — 9th position (9 x 12 10 9 9) fretboard diagram in Drop C Tuning (CGCFAD)
A Diminished ninth guitar chord — 9th position (9 11 11 10 9 10) fretboard diagram in Drop C Tuning (CGCFAD)
A Diminished ninth guitar chord — 9th position (9 11 11 10 12 10) fretboard diagram in Drop C Tuning (CGCFAD)
A Diminished ninth guitar chord — 9th position (9 11 12 10 9 9) fretboard diagram in Drop C Tuning (CGCFAD)
Read it as tab

Ao9 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.

A Diminished ninth guitar tab — Open (x 2 0 1 2 1) in Drop C Tuning (CGCFAD)
A Diminished ninth guitar tab — 6th position (9 x 6 7 6 9) in Drop C Tuning (CGCFAD)
A Diminished ninth guitar tab — 7th position (9 8 x 7 9 9) in Drop C Tuning (CGCFAD)
A Diminished ninth guitar tab — 9th position (9 11 11 10 x 10) in Drop C Tuning (CGCFAD)
A Diminished ninth guitar tab — 9th position (9 x 12 10 9 9) in Drop C Tuning (CGCFAD)
A Diminished ninth guitar tab — 9th position (9 11 11 10 9 10) in Drop C Tuning (CGCFAD)
A Diminished ninth guitar tab — 9th position (9 11 11 10 12 10) in Drop C Tuning (CGCFAD)
A Diminished ninth guitar tab — 9th position (9 11 12 10 9 9) in Drop C Tuning (CGCFAD)
Sound

How Ao9 sounds

Consonance
1/ 5
Brightness
DarkBright
Character

Moods & genres

Moods
eerietense
Genres
jazzfilm score
Theory

Notes & relationships

NotesF♯ · A · C · D♯ · G♯
Formula (scale degrees)6 · 1 · ♭3 · ♭5 · 7
Same notes asAo7(add9)
Explore

More ways to play A Diminished ninth

Browse the rest of the A chords in this tuning, or open Ao9 in the app for every voicing.

Ao9 in other tunings:

StandardDrop DOpen AOpen DOpen EOpen GOpen CDADGADHalf-Step Down

See & hear Ao9 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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