A major thirteenth
How to play Amaj13 — Major thirteenth
Amaj13 (Major thirteenth)A · C♯ · E · G♯ · B · F♯
Guitar samples: Acoustic guitar — University of Iowa (via tonejs-instruments, CC-BY 3.0)
A major thirteenth — notes and structure
The Amaj13 chord stacks the major family up to the thirteenth — lush and cinematic.
The Amaj13 major thirteenth consists of the notes A, C♯, E, G♯, B, F♯. Its interval structure is R–3–5–7–9–13 — the root, then each chord tone stacked above it. This is the same chord you see in the interactive finder above, drawn on the guitar fretboard with the root circled and every chord tone labelled.
Amaj13 stacks a major third (C♯), a perfect fifth (E), a major seventh (G♯), a ninth (B) and a thirteenth (F♯) above the root A.
The finder shows 2 ways to play Amaj13 — an open-position shape reaching up to the 5th fret. 1 of them use a barre.
What key is Amaj13 in?
Every note of Amaj13 belongs to the scales below, so the chord sounds at home in each of these keys — the roman numeral is the degree it sits on.
- A major — the I chord
- E major — the IV chord
- F♯ minor — the III chord
- C♯ minor — the VI chord
Chords that go with Amaj13
In A major, the chords built on the first, fourth and fifth degrees carry most songs — put Amaj13 next to these:
Frequently asked questions
- What notes are in the A major thirteenth chord?
- The Amaj13 chord contains the notes A, C♯, E, G♯, B, F♯. It stacks the major family up to the thirteenth — lush and cinematic.
- How many ways can you play Amaj13 on guitar?
- 2 voicings are shown on this page — from open position up the neck — each with its own fingering diagram and audio.
- Is Amaj13 a hard chord to play?
- Some voicings use a barre, which takes practice, but the chord is very playable once that shape is comfortable.
- What key does Amaj13 belong to?
- Amaj13 fits A major (where it is the I chord), E major (where it is the IV chord), F♯ minor (where it is the III chord) — every note of the chord is in those scales.