Space plays and stops
- Left hand
- Gb2
- Right hand
- Bb3Fb4
- Family
- Guide Tones
The Guide Tones I voicing of Gb7alt stacks Bb and Fb from the bottom up: the major 3rd and minor 7th of the chord. It leaves out the root, Gb, for the left hand or the bass player to take.
It's one of the Guide Tones voicings: just the 3rd and 7th, the notes that define each chord, played over the root. The other for Gb7alt is Guide Tones II.