Voicing of Bb Dominant 7

Rooted II

Back to Bb7

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Left hand
F3Ab3Bb3D4
Family
4-Note Rooted

The Rooted II voicing of Bb7 stacks F, Ab, Bb and D from the bottom up: the 5th, minor 7th, root and major 3rd 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 Bb7 is Rooted I.