Voicing of F Diminished 7

Drop 2 I

Back to Fdim7

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Left hand
F2
Right hand
Cb4F4Ab4Ebb5
Family
Drop 2

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