Voicing of Ab Augmented 7

Guide Tones I

Back to Ab7#5

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Left hand
Ab2
Right hand
C4Gb4
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Guide Tones

The Guide Tones I voicing of Ab7#5 stacks C and Gb from the bottom up: the major 3rd and minor 7th of the chord. It leaves out the root, Ab, 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 Ab7#5 is Guide Tones II.