Space plays and stops
- Left hand
- Bb2Ab3D4
- Right hand
- Db5Gb5Bb5
- Family
- Upper Structures
The bVI over 7th and 3rd, 2nd Inversion voicing of Bb7alt stacks Ab, D, Db, Gb and Bb from the bottom up: the minor 7th, major 3rd, minor 3rd, flat 13th and root of the chord.
It's one of the Upper Structures voicings. The others for Bb7alt are bVI over 3rd and 7th, bVI over 3rd and 7th, 1st Inversion, bVI over 3rd and 7th, 2nd Inversion, bVI over 7th and 3rd and bVI over 7th and 3rd, 1st Inversion.