A9 chord on 6-String Guitar – CGDGBD (Open G Low C)

in CGDGBD (Open G Low C) tuning

Root

Type

Tuning

Dominant 9

Notes:A · C# · E · G · B

medium

Piano Left hand Right hand

Fingerings (16)

A9 shapes as text

Frets	Fingers	Notes	Difficulty
1 0 2 2 0 2	1 – 2 3 – 4	C# G E A B E	medium
x 2 2 4 2 5	– 1 1 2 1 3	x A E B C# G	medium · barre on fret 2
4 6 5 4 0 7	1 3 2 1 – 4	E C# G B B A	medium · barre on fret 4
x x 7 6 0 5	– – 3 2 – 1	x x A C# B G	medium
9 6 9 6 8 x	3 1 4 1 2 –	A C# B C# G x	medium · barre on fret 6
9 9 7 0 0 11	2 3 1 – – 4	A E A G B C#	hard
9 x 9 0 8 11	2 – 3 – 1 4	A x B G G C#	hard
9 9 9 0 10 11	1 1 1 – 2 3	A E B G A C#	medium · barre on fret 9
11 0 11 0 10 11	2 – 3 – 1 4	B G C# G A C#	medium
1 2 2 0 0 2	1 2 3 – – 4	C# A E G B E	medium
x 2 5 4 2 2	– 1 3 2 1 1	x A G B C# E	medium · barre on fret 2
4 6 7 4 0 5	1 3 4 1 – 2	E C# A B B G	medium · barre on fret 4
9 6 5 9 0 x	3 2 1 4 – –	A C# G E B x	hard
9 6 7 0 0 7	4 1 2 – – 3	A C# A G B A	medium
9 9 11 0 0 7	2 3 4 – – 1	A E C# G B A	hard
9 x 11 0 8 9	2 – 4 – 1 3	A x C# G G B	hard

Max fret: 12

Fingerings shown: 16

The A9 chord (Dominant 9) is built from the notes A, C#, E, G, B. Below are playable fingerings for 6-String Guitar – CGDGBD (Open G Low C) generated for your selected tuning, ordered from open-position shapes up the neck. Tap a diagram to hear it, or switch to the piano view to see the same harmony on keys.

How the A9 chord is built

Formula: 1 · 3 · 5 · ♭7 · 9

Degree	Semitones	Note
1	0	A
3	4	C#
5	7	E
♭7	10	G
9	14	B

More A chords

A Am A7 A°A+Amaj7 Am7 A7♯5 A7♭5 A6 Am6 Am7♭5 A°7 Asus2 Asus4 Aadd9 Amaj9 Am9 A5

Other roots

C9 C#9 D9 D#9 E9 F9 F#9 G9 G#9 A#9 B9

See A9 in another tuning

Standard E E-A-D-G-B-E Half Step Down (Eb) D#-G#-C#-F#-A#-D#Drop D D-A-D-G-B-E Open D D-A-D-F#-A-D Open G D-G-D-G-B-D CGDGBD (Open G Low C) C-G-D-G-B-D DADGAD (D Modal) D-A-D-G-A-D

What notes make up the A9 chord?

A9 is a Dominant 9 chord built from the notes A, C#, E, G, B.

How do I read the diagram?

Strings run left to right from the lowest to the first string; the numbers show which finger presses each fret. An ○ marks an open string, an ✕ marks a muted one.