A flat dominant ninth

music notation
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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: G♯9, A♭7+2, G♯7+2, A♭M9♭7, G♯M9♭7, G♭9♭5♭7.

Notes in this chord: A♭, C, E♭, G♭, B♭. Integer notation: {0, 3, 6, 8, 10}.

Keys in which this chord fits with this spelling: D♭M, B♭m

Keys in which this chord fits with enharmonic spelling: C♯M, A♯m

Nearby chords (one less note): A♭7, A♭+2, E♭m+4, G♭6♭5, G♭♭5+2.

Nearby chords (one more note): A♭11, A♭9+6, A♭9+♯1, A♭9+♯2, A♭9+♯5, A♭9+♯7, B♭11♯5.

Parallel chords (same structure, different root): C9, D9, E9, F9, G9, A9, B9, C♭9, D♭9, E♭9, F♭9, G♭9, B♭9, C♯9, D♯9, E♯9, F♯9, G♯9, A♯9, B♯9.

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