Voicing of F Diminished 7

Drop 2 II

Back to Fdim7

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Left hand
F2
Right hand
Ebb4Ab4Cb5F5
Family
Drop 2

The Drop 2 II voicing of Fdim7 stacks Ebb, Ab, Cb and F from the bottom up: the diminished 7th, minor 3rd, flat 5th and root 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 Fdim7 are Drop 2 I, Drop 2 III and Drop 2 IV.