Chord · Triads

Asus4 — A Suspended 4th

Asus4 is the A suspended 4th chord. It is built on the root A with perfect 4th (D) and perfect 5th (E) above it — the formula 1 4 5, sounding the notes A D E. On the piano it sits at A (octave 3) and above in the library's voicing; the same 3 notes in any octave are still Asus4.

Root
A
Quality
Suspended 4th
Formula
1 4 5
Notes
A D E

On the keyboard

Asus4 on the piano keyboard: A D E145ADE

Right-hand fingering for this voicing: 1–4–5 (1 is the thumb).

The notes of Asus4

DegreeNoteInterval from the rootPitch
1ArootA3
4Dperfect 4thD4
5Eperfect 5thE4

Other triads on A

Suspended 4th chords on every root

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