The key of A major has three sharps. For reference, here are the notes in the A major scale:
- A
- B
- C Sharp
- D
- E
- F Sharp
- G Sharp
All the chords in the key of A major are made up of these seven notes, and each note gets to be the root note for one of the chords, thus making seven triad chords in this key.
- A Major
- B Minor
- C Sharp Minor
- D Major
- E Major
- F Sharp Minor
- G Sharp Diminished
Note: In this article I’m using guitar chord charts that I created using Microsoft Paint. Here are all the guitar chord charts that are free to use personally and commercially under Creative Commons Attribution (CC-BY) 4.0 License.
I Chord — A Major or A Major Seventh
The first chord (I) in the key of A major is the A major chord. Below is my preferred way to play the A major chord on guitar.

The A major seventh chord is the corresponding 7th chord for the I chord in the key of A major. Below is my favorite way to play the A major seventh chord.

ii Chord — B Minor or B Minor Seventh
The second chord (ii) in the key of A major is the B minor chord. Below is my preferred way to play the B minor chord on guitar.

The B minor seventh chord is the corresponding 7th chord for the ii chord in the key of A major. Below is my favorite way to play the B minor seventh chord.

iii Chord — C Sharp Minor or C Sharp Minor Seventh
The third chord (iii) in the key of A major is the C sharp minor chord. Below is my preferred way to play the C sharp minor chord on guitar.

The C sharp minor seventh chord is the corresponding 7th chord for the iii chord in the key of A major. Below is my favorite way to play the C sharp minor seventh chord.

IV Chord — D Major or D Major Seventh
The fourth chord (IV) in the key of A major is the D major chord. Below is my preferred way to play the D major chord on guitar.

The D major seventh chord is the corresponding 7th chord for the IV chord in the key of A major. Below is my favorite way to play the D major seventh chord.

V Chord — E Major or E Dominant Seventh
The fifth chord (V) in the key of A major is the E major chord. Below is my preferred way to play the E major chord on guitar.

The E dominant seventh chord is the corresponding 7th chord for the V chord in the key of A major. Below is my favorite way to play the E dominant seventh chord.

vi Chord — F Sharp Minor or F Sharp Minor Seventh
The sixth chord (vi) in the key of A major is the F sharp minor chord. Below is my preferred way to play the F sharp minor chord on guitar.

The F sharp minor seventh chord is the corresponding 7th chord for the vi chord in the key of A major. Below is my favorite way to play the F sharp minor seventh chord.

viidim Chord — G Sharp Diminished or G Sharp Minor Seventh Flat Five
The seventh chord (viidim) in the key of A major is the G sharp diminished chord. Below is my preferred way to play the G sharp diminished chord on guitar.

The G sharp minor seventh flat five chord is the corresponding 7th chord for the viidim chord in the key of A major. Below is my favorite way to play the G sharp minor seventh flat five chord.

Chord Progressions in the Key of A Major
Here are 10 chord progressions in the key of A Major that you can experiment with. I have included guitar tablature to make playing the chords easier for you.
1. A Major, D Major, E Major
E| --0---0-----2---2-----0---0---
B| --2---2-----3---3-----0---0---
G| --2---2-----2---2-----1---1---
D| --2---2-----0---0-----2---2---
A| --0---0---------------2---2---
E| ----------------------0---0---
2. A Major, E Major, F Sharp Minor, D Major
E| --0---0-----0---0-----2---2-----2---2---
B| --2---2-----0---0-----2---2-----3---3---
G| --2---2-----1---1-----2---2-----2---2---
D| --2---2-----2---2-----4---4-----0---0---
A| --0---0-----2---2-----4---4-------------
E| ------------0---0-----2---2-------------
3. A Major, D Major, A Major, E Major
E| --0---0-----2---2-----0---0-----0---0---
B| --2---2-----3---3-----2---2-----0---0---
G| --2---2-----2---2-----2---2-----1---1---
D| --2---2-----0---0-----2---2-----2---2---
A| --0---0---------------0---0-----2---2---
E| --------------------------------0---0---
4. A Major, C Sharp Minor, D Major, F Sharp Minor
E| --0---0-----4---4-----2---2-----2---2---
B| --2---2-----5---5-----3---3-----2---2---
G| --2---2-----6---6-----2---2-----2---2---
D| --2---2-----6---6-----0---0-----4---4---
A| --0---0-----4---4---------------4---4---
E| --------------------------------2---2---
5. F Sharp Minor, D Major, A Major, E Major
E| --2---2-----2---2-----0---0-----0---0---
B| --2---2-----3---3-----2---2-----0---0---
G| --2---2-----2---2-----2---2-----1---1---
D| --4---4-----0---0-----2---2-----2---2---
A| --4---4---------------0---0-----2---2---
E| --2---2-------------------------0---0---
6. D Major, A Major, E Major, A Major
E| --2---2-----0---0-----0---0-----0---0---
B| --3---3-----2---2-----0---0-----2---2---
G| --2---2-----2---2-----1---1-----2---2---
D| --0---0-----2---2-----2---2-----2---2---
A| ------------0---0-----2---2-----0---0---
E| ----------------------0---0-------------
7. A Major, F Sharp Minor, D Major, E Major
E| --0---0-----2---2-----2---2-----0---0---
B| --2---2-----2---2-----3---3-----0---0---
G| --2---2-----2---2-----2---2-----1---1---
D| --2---2-----4---4-----0---0-----2---2---
A| --0---0-----4---4---------------2---2---
E| ------------2---2---------------0---0---
8. B Minor, E Major, A Major, F Sharp Minor
E| --2---2-----0---0-----0---0-----2---2---
B| --3---3-----0---0-----2---2-----2---2---
G| --4---4-----1---1-----2---2-----2---2---
D| --4---4-----2---2-----2---2-----4---4---
A| --2---2-----2---2-----0---0-----4---4---
E| ------------0---0---------------2---2---
9. A Major, D Major, F Sharp Minor, E Major
E| --0---0-----2---2-----2---2-----0---0---
B| --2---2-----3---3-----2---2-----0---0---
G| --2---2-----2---2-----2---2-----1---1---
D| --2---2-----0---0-----4---4-----2---2---
A| --0---0---------------4---4-----2---2---
E| ----------------------2---2-----0---0---
10. A Major, B Minor, C Sharp Minor, D Major, E Major
E| --0---0-----2---2-----4---4-----2---2-----0---0---
B| --2---2-----3---3-----5---5-----3---3-----0---0---
G| --2---2-----4---4-----6---6-----2---2-----1---1---
D| --2---2-----4---4-----6---6-----0---0-----2---2---
A| --0---0-----2---2-----4---4---------------2---2---
E| ------------------------------------------0---0---
11. A Major, D Major, B Minor, E Major
E| --0---0-----2---2-----2---2-----0---0---
B| --2---2-----3---3-----3---3-----0---0---
G| --2---2-----2---2-----4---4-----1---1---
D| --2---2-----0---0-----4---4-----2---2---
A| --0---0---------------2---2-----2---2---
E| --------------------------------0---0---
12. A Major, E Major, F Sharp Minor, C Sharp Minor, D Major, A Major, D Major, E Major
E| --0---0-----0---0-----2---2-----4---4-----2---2-----0---0-----2---2-----0---0---
B| --2---2-----0---0-----2---2-----5---5-----3---3-----2---2-----3---3-----0---0---
G| --2---2-----1---1-----2---2-----6---6-----2---2-----2---2-----2---2-----1---1---
D| --2---2-----2---2-----4---4-----6---6-----0---0-----2---2-----0---0-----2---2---
A| --0---0-----2---2-----4---4-----4---4---------------0---0---------------2---2---
E| ------------0---0-----2---2---------------------------------------------0---0---