A9 7-string guitar chord

How to play A9 on 7-string guitar

The most common way, the first shape above: your ring finger on the low E string at the 5th fret, your index finger on the A string at the 4th fret, your little finger on the D string at the 5th fret and your middle finger on the G string at the 4th fret. Don’t play the low B, high B and high E strings.

From the low B string x 5 4 5 4 x x (x: not played, 0: open)

What notes are in A9?

A9, A dominant ninth, is A, C♯, E, G and B: the root (A), the major third (C♯), the perfect fifth (E), the minor seventh (G) and the ninth (B). Its formula is 1 3 5 ♭7 9.

Can I play A7 instead of A9?

Yes. A9 is A7 with B added; on guitar the root or fifth is often left out to make room for it.

What is the difference between A9 and Aadd9?

A9 has the minor seventh, G, under the ninth; Aadd9 has the ninth with no seventh.