Space plays and stops
- Left hand
- Ab2
- Right hand
- Db4Eb4Gb4Bb4
- Family
- 4-Note Rootless (Type A/B)
The Type A voicing of Ab9sus4 stacks Db, Eb, Gb and Bb from the bottom up: the 4th, 5th, minor 7th and 9th of the chord. It leaves out the root, Ab, for the left hand or the bass player to take.
It's one of the 4-Note Rootless (Type A/B) voicings: four-note rootless voicings in their two forms, with the 3rd or the 7th on the bottom, played over the root. The other for Ab9sus4 is Type B.