Voicing of Ab Diminished 7

Rooted Guide Tones II

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Left hand
Ab2Gbb3Cb4
Family
Rooted Guide Tones

The Rooted Guide Tones II voicing of Abdim7 stacks Ab, Gbb and Cb from the bottom up: the root, diminished 7th and minor 3rd of the chord.

It's one of the Rooted Guide Tones voicings: the root, 3rd and 7th in the left hand, as bebop pianists comped. The other for Abdim7 is Rooted Guide Tones I.