Space plays and stops
- Left hand
- A3D4G4
- Right hand
- C5E5
- Family
- 5-Note Quartal
The So What I voicing of Am9 stacks A, D, G, C and E 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 Am9 is So What II.