A Chord on the Guitar (A Major) - 10 Ways to Play (and Some Tips/Theory)

The A Major chord is one of the most common and popular chords on the guitar. The open A chord is one of the first chords that most guitarists learn, and it has been used in countless songs across many genres.

Some Quick A Chord Theory

The A Major chord contains the notes A, C# and E.
The A Major chord is produced by playing the 1st (root), 3rd and 5th notes of the A Major scale.
The A Major chord (just like all Major chords) contains the following intervals (from the root note): Major 3rd, minor 3rd, Perfect 4th (back to the root note).
In the key of A, the following chords will compliment the A chord: A, Bm, C#m, D, E, F#m, G#diminished.

10 Ways To Play The A Major Chord

If you’ve come to this page just to view some chord diagrams for A, here they are.

Easy A Chord Shape (Open A)

The easiest version of the A chord is the commonly played open A chord:

How to Play the A Major Chord (Step by Step)

Place your first finger on the second fret of the forth string.
Place your second finger on the second fret of the third string.
Place your third finger on the second fret of the second string.
Strum the first five strings of the guitar, without hitting the fifth string.

The instructions above are step by step instructions for playing the most common A Major chord shape, which is the open chord A. These instructions can actually be super helpful when you feel like you’re interpreting the shape incorrectly. By going through the A chord instructions step by step, you can verify that you’re playing the chord correctly.

Barre Chord Shapes for A

The A chord can be played as a barre chord by playing a root 6 barre chord shape and starting on the 5^th fret or by playing a root 5 barre chord Major shape and starting on the 12^th fret:

A Major Triads

Most of the time, when we play the A chord, we play the standard shapes, such as the open position A and the barre chord shapes. However, learning the strict root position and inverted triads is a great way of exploring subtle and interesting variations that exist across the fretboard. The A Major triad can be voiced in the following three ways:

A Major Triad (Root Position) – A, C#, E
A Major Triad (1st Inversion) – C#, E, A
A Major Triad (2nd Inversion) – E, A, C#

Here are six different ways to play the A Major triad (including inversions).

Which Keys Have The A chord in Them?

The A chord can be found in the following keys:

The key of A Major (A, Bm, C#m, D, E, F#m, G#dim)
The key of E Major (E, F#m, G#m, A, B, C#m, D#dim)
The key of D Major (D, Em, F#m, G, A, Bm, C#dim)
The key of F# minor (F#m, G#dim, A, Bm, C#m, D, E)
The key of C# minor (C#m, D#dim, E, F#m, G#m, A, B)
The key of B minor (Bm, C#dim, D, Em, F#m, G, A)

Alternative But Useful A Chord Shapes

The following shapes are alternative ways of playing the A Major chord shape. They’re not the most common A shapes, but used enough to include here as interesting alternatives.

A Chord Substitutions

The A chord can often be substituted with the A sus 4 chord, the A sus 2 chord and the A add 9 chord. The A chord can also be used itself as a substitute for more complicated chords, such as the A Major 7 chord, the A7 chord, and other extension chords which have A as the root note (it can’t be used in place of minor chords though!).

Which Scales Can Be Played Over the A chord?

The most common and effective scales that can be used to solo/improvise over the A Major chord, or to create melodies for the purposes of song writing are:

A Major pentatonic scale – This scale will almost always work over the A Major chord, in any context.
A Major scale – This is the ‘default scale’ of the A chord.
A Lydian mode – This scale can be used over the A chord in certain contexts to add a jazz flavour.
A Major Blues – This scale is particularly useful in a Blues context.

A Chord on the Guitar (A Major) – 10 Ways to Play (and Some Tips/Theory)