A Major 6
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A6
A – C♯ – E – F♯
Formula:Root - Major 3rd - Perfect 5th - Major 6th
Intervals:1-3-5-6
Scale Degrees:1-3-5-6
Introduction
The A Major 6 chord is a four-note chord made up of A, C♯, E, and F♯.
Notes
A Major 6 Inversions
| Position | Notes |
|---|---|
| Root Position | A – C♯ – E – F♯ |
| 1st Inversion | C♯ – E – F♯ – A |
| 2nd Inversion | E – F♯ – A – C♯ |
| 3rd Inversion | A – C♯ – E – F♯ |
Key Signature
The key of A Major 6 has 3 sharps.
F♯C♯G♯
Order of sharps
Sharps are added to a key signature in a fixed order. Each new sharp key adds the next sharp on the list.
F♯C♯G♯D♯A♯E♯B♯
Mnemonic: Father Charles Goes Down And Ends Battle
Chords in the Key of A Major
These are the diatonic triads built on each degree of the A major scale:
C
D
E
F
G
A
B
C
D
E
F
G
A
B
I — A Major (major)
Theory: Intervals
Formula: Root - Major 3rd - Perfect 5th - Major 6th
Intervals: 1-3-5-6
The A Major 6 is built by stacking intervals from the root note. The formula Root - Major 3rd - Perfect 5th - Major 6th describes the scale degrees used. The intervals 1-3-5-6 show the distance between each note in the chord.
A Major 6 — Frequently Asked Questions
What notes are in the A Major 6 chord?
A6 contains: A, C#, E, F#. Major triad with major sixth.
How does A6 differ from Amaj7?
A6 has F# (sixth). Amaj7 has G# (seventh).
How does A6 differ from F#m7?
Same notes, different root.
How is A6 used?
Vintage jazz, country, acoustic. A is a common acoustic key.
What songs use Major 6th?
Swing, country.
Can I substitute A6 for A Major?
Yes.
Practice Tips
- Play A Major then add F#.
- A6 and F#m7 same notes.
- Common in country and acoustic.
- Vintage jazz tonic.
- Compare with Amaj7.
- Warm, nostalgic.
Related Tools
Chord FinderLook up any chord — see the notes, hear it, and play along.Chord DrillTimed drills to build speed and recognition across all chord types.Practice RoomPlug in a MIDI keyboard and get real-time feedback on every chord and scale.Circle of FifthsVisualize key relationships, relative minors, and key signatures.MIDI MonitorLive MIDI message stream with note names, velocity, and a scrolling staff.