A flat major 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♯M9, A♭9♯7, D♯6+4, E♭6+4, G♯9♯7, E♭6+11.

Notes in this chord: A♭, C, E♭, G, B♭. Integer notation: {0, 3, 7, 8, 10}.

Keys in which this chord fits with this spelling: E♭M, A♭M, Cm, Fm

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

Nearby chords (one less note): E♭6, A♭+2, E♭+4, A♭+♭1, B♭2+6+7.

Nearby chords (one more note): Fm11, A♭M11, A♭9+♯7, B♭13-5, A♭M9+♯1, A♭M9+♯2, E♭11♭7♭9.

Parallel chords (same structure, different root): CM9, DM9, EM9, FM9, GM9, AM9, BM9, C♭M9, D♭M9, E♭M9, F♭M9, G♭M9, B♭M9, C♯M9, D♯M9, E♯M9, F♯M9, G♯M9, A♯M9, B♯M9.

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