Six String Guitar · Drop C Tuning (CGCFAD)

Aø11♭9A Half-Diminished 11th Flat 9th

F♯Root

Atone

Ctone

Etone

Gtone

Btone

Formula 6 · 1 · ♭3 · 5 · ♭7 · 2 · Notes F♯ · A · C · E · G · B

How to play it

Aø11♭9 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 Half-Diminished 11th Flat 9th guitar chord — 6th position (9 7 7 7 6 8) fretboard diagram in Drop C Tuning (CGCFAD)

A Half-Diminished 11th Flat 9th guitar chord — 7th position (9 7 10 10 10 10) fretboard diagram in Drop C Tuning (CGCFAD)

A Half-Diminished 11th Flat 9th guitar chord — 18th position (21 19 19 19 18 20) fretboard diagram in Drop C Tuning (CGCFAD)

A Half-Diminished 11th Flat 9th guitar chord — 19th position (21 19 22 22 22 22) fretboard diagram in Drop C Tuning (CGCFAD)

Read it as tab

Aø11♭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.

A Half-Diminished 11th Flat 9th guitar tab — 6th position (9 7 7 7 6 8) in Drop C Tuning (CGCFAD)

A Half-Diminished 11th Flat 9th guitar tab — 7th position (9 7 10 10 10 10) in Drop C Tuning (CGCFAD)

A Half-Diminished 11th Flat 9th guitar tab — 18th position (21 19 19 19 18 20) in Drop C Tuning (CGCFAD)

A Half-Diminished 11th Flat 9th guitar tab — 19th position (21 19 22 22 22 22) in Drop C Tuning (CGCFAD)

Sound

How Aø11♭9 sounds

Consonance

1/ 5

Brightness

DarkBright

Character

Moods & genres

Moods

bleakhollow

Genres

experimental

Theory

Notes & relationships

NotesF♯ · A · C · E · G · B

Formula (scale degrees)6 · 1 · ♭3 · 5 · ♭7 · 2

Same notes asAø♭9(add11)Ao♭9(add11)

Explore

More ways to play A Half-Diminished 11th Flat 9th

Browse the rest of the A chords in this tuning, or open Aø11♭9 in the app for every voicing.

Aø11♭9 in other tunings:

See & hear Aø11♭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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