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A Major · Circle of Fifths

Select a key to connect its signature, scale, chords and guitar fretboard positions.

Explore the circle

Select any major or minor key
CAmGEmDIVBmiiAIF♯mviEVC♯miiiBG♯mF♯D♯mD♭B♭mA♭FmE♭CmB♭GmFDm
Selected key: A Major
  1. Bdim
  2. F♯dim
  3. C♯dim
  4. G♯dim, vii°
  5. D♯dim
  6. A♯dim
  7. E♯dim
  8. Cdim
  9. Gdim
  10. Ddim
  11. Adim
  12. Edim
Selected: A MajorRelative keyFifth neighborsDiatonic chordsDiminished triads: G♯dim (vii°)

Key profile

A Major

3 sharps

Circle relationships

A fifth aboveE MajorA fifth belowD MajorRelative keyF♯ Minor

Scale notes

ABC♯DEF♯G♯

Diatonic chords

Primary
In-key minor
A

A · C♯ · E

View A chord page

Guitar fretboard

A Major · standard tuning · frets 0–12

0357912EBGDAEEF♯G♯ABC♯DEBC♯DEF♯G♯ABG♯ABC♯DEF♯DEF♯G♯ABC♯DABC♯DEF♯G♯AEF♯G♯ABC♯DE
● Root● Scale toneTap a note to hear it

Swipe sideways to explore all twelve frets.

Progression explorer

Fixed patterns mapped to this key
AEF♯mD
100 BPM · 2 beats / chord

Quick practice

Learn by doing

What is a fifth above A Major?

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