A9+♭1

A dominant ninth, add flat root

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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: A9+♯7, E11♯9♭7, E6+4+♯2, E6+11+♯2, F♭11♯9♭7, F♭6+4+♯2.

Notes in this chord: A♭, A, C♯, E, G, B. Integer notation: {1, 4, 7, 8, 9, 11}.

Nearby chords (one less note): A9, AM9, A7+♯7, E6+♯2, E+4+♯2, A9-5+♯7.

Nearby chords (one more note): B13♯5, E13♯9, A9+♯1+♯7, A9+♯2+♯7, A9+♯5+♯7, G♭m11+♯1.

Parallel chords (same structure, different root): C9+♭1, D9+♭1, E9+♭1, F9+♭1, G9+♭1, B9+♭1, C♭9+♭1, D♭9+♭1, E♭9+♭1, F♭9+♭1, G♭9+♭1, A♭9+♭1, B♭9+♭1, C♯9+♭1, D♯9+♭1, E♯9+♭1, F♯9+♭1, G♯9+♭1, A♯9+♭1, B♯9+♭1.

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

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