Key of A Major

The 7 diatonic chords in A Major, shown with their Roman numeral function and color-coded intervals.

A Major Scale & Chords

The A Major scale contains the notes: A, B, C#, D, E, F#, G#.

The 7 diatonic chords are: I = A, ii = Bm, iii = C#m, IV = D, V = E, vi = F#m, vii° = G#dim.

I
A
R
M3
P5
ii
Bm
R
m3
P5
iii
C#m
R
m3
P5
IV
D
R
M3
P5
V
E
R
M3
P5
vi
F#m
R
m3
P5
vii°
G#dim
R
m3
♭5

Common Progressions in A Major

Pop (I-V-vi-IV)
A → E → F#m → D
Classic Rock (I-IV-V)
A → D → E
50s (I-vi-IV-V)
A → F#m → D → E
Jazz ii-V-I
Bm → E → A

Related Keys

F# Minor (relative minor)A Minor (parallel minor)E Major (dominant)D Major (subdominant)
Build a Progression in A Major