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Key

Key of A major

A major is spelled A, B, C♯, D, E, F♯, G♯. Signature: 3 sharps (F♯ C♯ G♯).

  • 3 sharps
  • Relative G♭
  • Play the scale

A major

Notes, signature and the chords of the key

A major uses 3 sharps (F♯ C♯ G♯). Its relative minor is G♭ minor. The scale is A – B – C♯ – D – E – F♯ – G♯.

DegreeChordRoot frequency
IA major440.00 Hz
iiB minor493.88 Hz
iiiC♯ minor554.37 Hz
IVD major587.33 Hz
VE major659.26 Hz
viF♯ minor739.99 Hz
vii°G♯ diminished830.61 Hz

Tonic note page: A4. Matching scale page: A major scale.

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Explore the cluster

A minor The parallel key, same tonic, other mode. Parallel key → A major scale The scale on its own, with playback. Play the scale → A major chord Just the tonic chord, with its notes and frequencies. Tonic chord →

FAQ

A major questions

How many sharps or flats are in A major?

3 sharps (F♯ C♯ G♯).

What is the relative minor of A major?

G♭ minor, which shares this signature.

Are these chord qualities for the harmonic minor?

No. Minor keys on this page use the natural minor, so the v chord is minor. Harmonic and melodic minor are a later batch.