A#/B♭ 9th suspended 4th chords Author: Juan Martinez Categories: A♯ Chords Tags: 9sus4 chords A#9sus4 chord on a piano Formula: 1-4-5-♭7-9 Notes: A#-D#-E#-G#-B# chord suffix: A#9sus4 Use these charts to create your own A#9sus4 chord or play a A#9sus4 melody A#9sus4 chord on a pianoA# 9th suspended 4th chord on a guitar