Voicing of C# Diminished 7

Drop 2 III

Back to C#dim7

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Left hand
C#2
Right hand
C#4G4Bb4E5
Family
Drop 2

The Drop 2 III voicing of C#dim7 stacks C#, G, Bb and E from the bottom up: the root, flat 5th, diminished 7th and minor 3rd 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 C#dim7 are Drop 2 I, Drop 2 II and Drop 2 IV.