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- Left hand
- Gb3Bbb3Dbb4Fbb4
- Family
- 4-Note Rooted
The Rooted I voicing of Gbdim7 stacks Gb, Bbb, Dbb and Fbb from the bottom up: the root, minor 3rd, flat 5th and diminished 7th of the chord.
It's one of the 4-Note Rooted voicings: four-note voicings with the root on the bottom or inside, in the left hand. The others for Gbdim7 are Rooted II, Rooted III and Rooted IV.