Voicing of A# Diminished 7

Guide Tones I

Back to A#dim7

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Left hand
A#2
Right hand
C#4G4
Family
Guide Tones

The Guide Tones I voicing of A#dim7 stacks C# and G from the bottom up: the minor 3rd and diminished 7th of the chord. It leaves out the root, A#, for the left hand or the bass player to take.

It's one of the Guide Tones voicings: just the 3rd and 7th, the notes that define each chord, played over the root. The other for A#dim7 is Guide Tones II.