A9 chord on 6-String Guitar – Open C

in Open C (C-G-C-G-C-E) tuning

Root

Type

Tuning

Dominant 9

Notes:A · C# · E · G · B

mediumbarre on fret 1

Piano Left hand Right hand

Fingerings (16)

A9 shapes as text

Frets	Fingers	Notes	Difficulty
x 2 1 4 1 3	– 2 1 4 1 3	x A C# B C# G	medium · barre on fret 1
4 4 4 6 7 5	1 1 1 3 4 2	E B E C# G A	medium · barre on fret 4
x x 9 6 7 7	– – 4 1 2 3	x x A C# G B	medium
9 x 7 0 11 9	2 – 1 – 4 3	A x G G B C#	hard
9 9 9 12 11 9	1 1 1 3 2 1	A E A G B C#	medium · barre on fret 9
x 2 x 4 1 3	– 2 – 4 1 3	x A x B C# G	hard
4 4 7 6 4 5	1 1 4 3 1 2	E B G C# E A	medium · barre on fret 4
9 6 7 6 x 7	4 1 2 1 – 3	A C# G C# x B	hard · barre on fret 6
9 x 11 0 7 9	2 – 4 – 1 3	A x B G G C#	hard
9 9 11 12 9 9	1 1 2 3 1 1	A E B G A C#	medium · barre on fret 9
x 2 1 4 x 3	– 2 1 4 – 3	x A C# B x G	hard
4 6 4 4 7 5	1 3 1 1 4 2	E C# E B G A	medium · barre on fret 4
9 6 x 0 7 7	4 1 – – 2 3	A C# x G G B	hard
9 x 7 x 11 9	2 – 1 – 4 3	A x G x B C#	hard
9 9 11 12 11 9	1 1 2 4 3 1	A E B G B C#	medium · barre on fret 9
1 4 1 0 4 5	1 2 1 – 3 4	C# B C# G E A	hard · barre on fret 1

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 – Open 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 C C-G-C-G-C-E Open D D-A-D-F#-A-D Open G D-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.