The A-flat dominant seventh suspended fourth chord (abbreviated "Ab7sus4 chord") is a four-note chord consisting of the notes A♭, D♭, E♭, and G♭. The chord is formed by adding a minor seventh to a A-flat suspended fourth chord.
A-flat dominant seventh suspended fourth chord
A♭ D♭ E♭ G♭
1 4 5 ♭7
tetrad (four-note chord)