A9+♯1+♭1
A dominant ninth, add sharp root, add flat root
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MSK 007 Leapfrog VCF
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MSK 009 Coiler VCF
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Equivalent chord symbols: A9+♯1+♯7, A9+♯7+♭2, E6+♯2+♯4+♯10.
Notes in this chord: A♭, A, A♯, C♯, E, G, B. Integer notation: {1, 4, 7, 8, 9, 10, 11}.
Nearby chords (one less note): A9+♯1, A9+♯7, AM9+♯1, A9♭9+♯7, E6+♯2+♯4, E+4+♯2+♯4, Gdim+2+♯1+♯3.
Nearby chords (one more note): B13♯5+♯7, E13♯9+♯4, G♭11+♯1+♯2, A9+♯1+♯2+♯7, D♭13♯9♯11+♯5.
Parallel chords (same structure, different root): C9+♯1+♭1, D9+♯1+♭1, E9+♯1+♭1, F9+♯1+♭1, G9+♯1+♭1, B9+♯1+♭1, C♭9+♯1+♭1, D♭9+♯1+♭1, E♭9+♯1+♭1, F♭9+♯1+♭1, G♭9+♯1+♭1, A♭9+♯1+♭1, B♭9+♯1+♭1, C♯9+♯1+♭1, D♯9+♯1+♭1, E♯9+♯1+♭1, F♯9+♯1+♭1, G♯9+♯1+♭1, A♯9+♯1+♭1, B♯9+♯1+♭1.
This chord contains too many notes to play on the 6 strings of guitar standard EADGBE tuning (change tuning or instrument).