Chord · 6ths & Adds

Aadd4 — A Added 4th

Aadd4 is the A added 4th chord. It is built on the root A with major 3rd (C♯), perfect 4th (D) and perfect 5th (E) above it — the formula 1 3 4 5, sounding the notes A C♯ D E. On the piano it sits at A (octave 3) and above in the library's voicing; the same 4 notes in any octave are still Aadd4.

Root
A
Quality
Added 4th
Formula
1 3 4 5
Notes
A C♯ D E

On the keyboard

Aadd4 on the piano keyboard: A C♯ D EAC♯DE

The notes of Aadd4

DegreeNoteInterval from the rootPitch
1ArootA3
3C♯major 3rdC♯4
4Dperfect 4thD4
5Eperfect 5thE4

Other 6ths & adds on A

A6Am6A6/9Am6/9Aadd2Aadd9Aadd11Am(add9)Am(add11)

Added 4th chords on every root

Cadd4D♭add4Dadd4E♭add4Eadd4Fadd4F♯add4Gadd4A♭add4B♭add4Badd4

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