Chord · 11ths

Amaj11 — A Major 11th

Amaj11 is the A major 11th chord. It is built on the root A with major 3rd (C♯), perfect 5th (E), major 7th (G♯), major 9th (B) and perfect 11th (D) above it — the formula 1 3 5 7 9 11, sounding the notes A C♯ E G♯ B D. On the piano it sits at A (octave 3) and above in the library's voicing; the same 6 notes in any octave are still Amaj11.

Root
A
Quality
Major 11th
Formula
1 3 5 7 9 11
Notes
A C♯ E G♯ B D

On the keyboard

Amaj11 on the piano keyboard: A C♯ E G♯ B DAC♯EG♯BD

The notes of Amaj11

DegreeNoteInterval from the rootPitch
1ArootA3
3C♯major 3rdC♯4
5Eperfect 5thE4
7G♯major 7thG♯4
9Bmajor 9thB4
11Dperfect 11thD5

Other 11ths on A

Major 11th chords on every root

Part of the chord reference. See also the scales and the keys.