guitar chord
A6
A major triad with a sixth added. The same four notes as a minor seventh chord a third below.
Every fingering that fits a hand
x04220
easy
504650
moderate
x02222
moderate
504220
moderate
x04650
easy
What is true of it
A6 is A, C♯, E and F♯ — 1, 3, 5 and 6 counted from A.
These are also the notes of F♯m7/A and G♭m7/A. Which name is right depends on what is underneath and what came before — the notes alone do not decide.
On an instrument that cannot reach all 4, the 5 goes first, in that order.
The easiest of the 5 fingerings below is x04220: 3 fingers, held at the 2nd fret.
None of them uses an open string, so this chord moves up the neck unchanged — the same shape 1 fret higher is the chord a semitone above.
1 string stays silent.
Where its notes are on the neck
The brass dots are A, the root. Everything else is a chord tone with its degree printed in it.
With a different note underneath
A6/C♯
x44220
A6/E
004220
A6/F♯
202220
An inversion is the same chord with a different note lowest. The name changes to a slash name because the bass is what a listener hears as the foundation.