Voicing of Fb Dominant b5

Rooted I

Back to Fb7b5

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Left hand
Fb3Ab3Cbb4Ebb4
Family
4-Note Rooted

The Rooted I voicing of Fb7b5 stacks Fb, Ab, Cbb and Ebb from the bottom up: the root, major 3rd, flat 5th and minor 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 other for Fb7b5 is Rooted II.