C Augmented 7th, 3rd inversion (Bb in the bass)

CEBbG#
4 4
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Notes, from the bass up

Bb (bass)CEG#

The same notes as C Augmented 7th (Bb, C, E and G#), rearranged so Bb is the lowest note. Use it to move between chords with smaller jumps across the keyboard.

See the full C Augmented 7th page for root position, every other inversion, open voicings and the chord formula.