A9 chord on 6-String Guitar – Open B

in Open B (B-F#-B-F#-B-D#) 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 3 0 1 2 1	– 3 – 1 2 1	x A B G C# E	medium · barre on fret 1
x 3 2 5 2 4	– 2 1 4 1 3	x A C# B C# G	medium · barre on fret 2
5 5 5 7 8 6	1 1 1 3 4 2	E B E C# G A	medium · barre on fret 5
10 x 0 7 8 6	4 – – 2 3 1	A x B C# G A	hard
10 7 8 7 0 8	4 1 2 1 – 3	A C# G C# B B	medium · barre on fret 7
10 x 0 10 8 10	2 – – 3 1 4	A x B E G C#	hard
x 3 2 1 0 1	– 4 3 1 – 2	x A C# G B E	medium
x 3 x 5 2 4	– 2 – 4 1 3	x A x B C# G	hard
5 5 8 7 5 6	1 1 4 3 1 2	E B G C# E A	medium · barre on fret 5
10 x 8 7 0 6	4 – 3 2 – 1	A x G C# B A	hard
10 7 8 7 0 10	3 1 2 1 – 4	A C# G C# B C#	medium · barre on fret 7
10 x 8 10 0 10	2 – 1 3 – 4	A x G E B C#	hard
x 3 0 3 2 4	– 2 – 3 1 4	x A B A C# G	medium
x 3 2 5 x 4	– 2 1 4 – 3	x A C# B x G	hard
5 7 5 5 8 6	1 3 1 1 4 2	E C# E B G A	medium · barre on fret 5
10 7 0 x 8 6	4 2 – – 3 1	A C# B x G A	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 – Open B 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 Open B B-F#-B-F#-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.