The A suspended fourth chord (abbreviated "Asus4 chord") is a triad consisting of the notes A, D, and E. The chord is formed by replacing the third of a A major chord with a perfect fourth.

Name
A suspended fourth chord
Notes
A D E
Intervals
1 4 5
Chord symbol
Asus4
Alternative symbols
A(sus4) Asus
Type
triad (three-note chord)

Asus4 chord on piano

Asus4 chord on guitar

Asus4 chord on ukulele

Asus4 chord on the staff