Voicing of Bb Dominant 7 sus4

Drop 2 I

Back to Bb7sus4

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Left hand
Bb2
Right hand
F3Bb3Eb4Ab4
Family
Drop 2

The Drop 2 I voicing of Bb7sus4 stacks F, Bb, Eb and Ab from the bottom up: the 5th, root, 4th and minor 7th of the chord.

It's one of the Drop 2 voicings: four-note chords in close position with the second note from the top dropped an octave, played over the root. The others for Bb7sus4 are Drop 2 II, Drop 2 III and Drop 2 IV.