Keys: chords and scales

Chords in the key of A major

The key of A major has 3 sharps in the key signature (F♯, C♯, G♯). Its scale is A – B – C♯ – D – E – F♯ – G♯ and its seven chords are A, Bm, C♯m, D, E, F♯m and G♯dim. The most common progression is A – E – F♯m – D. Its relative key is F sharp minor. With a capo on fret 2, you can play it with the shapes of G major.

The chords in the key

A is home; D and E create the movement and tension that lead back to it, and F♯m adds the minor colour. The four-note versions add the seventh.

DegreeChordNotesRoleWith seventh
I A A – C♯ – E Tonic: home Amaj7
ii Bm B – D – F♯ Subdominant Bm7
iii C♯m C♯ – E – G♯ Tonic substitute C♯m7
IV D D – F♯ – A Subdominant Dmaj7
V E E – G♯ – B Dominant: tension E7
vi F♯m F♯ – A – C♯ Relative tonic F♯m7
vii° G♯dim G♯ – B – D Dominant (leading tone) —

Scale

A – B – C♯ – D – E – F♯ – G♯

With a capo

To make a song sound in A major with easy open shapes:

  • Capo on fret 2: play the shapes of G major
  • Capo on fret 5: play the shapes of E major
  • Capo on fret 7: play the shapes of D major

Frequently asked questions

What chords are in the key of A major?

Its seven chords are A, Bm, C♯m, D, E, F♯m and G♯dim.

How many sharps or flats does A major have?

It has 3 sharps in the key signature (F♯, C♯, G♯).

What is the relative key of A major?

Its relative key is F sharp minor: they share the same notes and chords.