Ab9 sus chord
Ab9 sus chord for piano with keyboard diagram.
Explanation: The Ab9sus4 is a five-note chord (although the fifth is sometimes omitted).
Theory: The Ab9sus4 is an suspended ninth chord with the third replaced by a perfect four. Ab9sus4 is the same as Ab11 without the major third (C).
Notes: Ab - Db - Eb - Gb - Bb