A♭♭5+9

A flat major, flat fifth, add ninth

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MSK 007 Leapfrog VCF (patch; see in online store)
MSK 009 Coiler VCF (patch; see in online store)

Equivalent chord symbols: A♯9-5, B♭9-5, A♭♭5+2, G♯♭5+2, G♯♭5+9, A♭4♯4+2.

Notes in this chord: A♭, C, E♭♭, B♭. Integer notation: {0, 2, 8, 10}.

Keys in which this chord fits with enharmonic spelling: E♭M, D♯M, Cm, B♯m

Nearby chords (one less note): A♭♭5, A♭3+2, B♭3+2, A♭sus2♭5.

Nearby chords (one more note): B♭9, C9♯5, B♭9♯5, A♭M9♭5, A♭+2+♯4, A♭♭5+2+4, A♭♭5+2+♯1, A♭♭5+2+♯2.

Parallel chords (same structure, different root): C♭♭5+9, D♭♭5+9, E♭♭5+9, F♭♭5+9, G♭♭5+9, B♭♭5+9, C♯♭5+9, D♯♭5+9, E♯♭5+9, F♯♭5+9, G♯♭5+9, A♯♭5+9, B♯♭5+9.

Experimental fretting charts for guitar standard EADGBE tuning (change tuning or instrument):

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