Chords in the key of A

The key of A major has seven chords: A · Bm · C♯m · D · E · F♯m · G♯dim. Tap any chord to hear it.

Keys lit: the A major scale. Tap a chord to light its notes.

The A major chord chart

DegreeTriadNotes7th chordFunction
IAA C♯ EAmaj7 (Imaj7)Tonic: home
iiBmB D F♯Bm7 (ii7)Pre-dominant
iiiC♯mC♯ E G♯C♯m7 (iii7)Tonic substitute
IVDD F♯ ADmaj7 (IVmaj7)Subdominant
VEE G♯ BE7 (V7)Dominant: pulls home
viF♯mF♯ A C♯F♯m7 (vi7)Relative minor
vii°G♯dimG♯ B DG♯m7♭5 (viiø7)Leading-tone chord

Key of A at a glance

  • Scale: A B C♯ D E F♯ G♯
  • Key signature: 3 sharps (C♯ F♯ G♯)
  • Major chords: A, D, E
  • Minor chords: Bm, C♯m, F♯m
  • Diminished: G♯dim
  • Relative minor: F♯ minor

The pattern of chord qualities is the same in every major key: major, minor, minor, major, major, minor, diminished. It comes from stacking every other note of the scale on each degree.

Common progressions in A

ProgressionChords in APlay
I–V–vi–IV (pop)A – E – F♯m – D
I–IV–V (rock and folk)A – D – E – A
I–vi–IV–V (50s)A – F♯m – D – E
ii–V–I (jazz)Bm – E – A – A
vi–IV–I–V (sensitive)F♯m – D – A – E

More ideas by mood: pop, sad and jazz chord progressions, or loop your own in the chord progression generator.

Other keys

Questions

What chords are in the key of A?

The key of A major has seven chords: A, Bm, C♯m, D, E, F♯m, G♯dim. In Roman numerals that is I, ii, iii, IV, V, vi and vii°.

What are the I, IV and V chords in A?

A (I), D (IV) and E (V). These three major chords can harmonise most simple melodies in A major.

What is the relative minor of A major?

F♯ minor. It uses the same notes and key signature (3 sharps), starting on the sixth degree, F♯.

What notes are in the A major scale?

A, B, C♯, D, E, F♯, G♯, then A again an octave higher.