Space plays and stops
- Left hand
- Gb3Cb4Fb4
- Right hand
- Bbb4Db5
- Family
- 5-Note Quartal
The So What I voicing of Gbm9 stacks Gb, Cb, Fb, Bbb and Db from the bottom up: the root, 11th, minor 7th, minor 3rd and 5th of the chord.
It's one of the 5-Note Quartal voicings. The other for Gbm9 is So What II.