Key

The Key of A major

A major is A – B – C♯ – D – E – F♯ – G♯.

Why this key

A major sits under the hand: A, D and E are the first three chords most people learn, and the open A string is the root. It is the default key of blues and early rock for that reason. Its three sharps look busier on paper than they feel to play.

Every chord in A major

Seven chords, built on each note of the scale in turn.

The diatonic triads of A major
NumeralChordQuality
IAmajor
iiBmminor
iiiC#mminor
IVDmajor
VEmajor
viF#mminor
vii°G#dimdim

The relative minor: F# minor — the same seven notes

The scale, on the neck

A major — A B C♯ D E F♯ G♯.

A Major (Ionian)

the plain major scale

NotesABC♯DEF♯G♯

eBGDAE0357912

Chord-Scale Reference §2 / §7.5

Want more?

Hear these chords, change the key, and see every voicing in Turnaround