A9+♯1+♯2+♭1

A dominant ninth, add sharp root, add sharp second, 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+♯1+♯2+♯7, A9+♯1+♯7+♯9, A♭M11♯5+♯1+♯2, A♭M11♯5+♯1+♯9, A♭M11♯5+♯1+♭3.

Notes in this chord: A♭, A, A♯, B♯, C♯, E, G, B. Integer notation: {0, 1, 4, 7, 8, 9, 10, 11}.

Nearby chords (one less note): A9+♯1+♯2, A9+♯1+♯7, A9+♯2+♯7, AM9+♯1+♯2, Am9+♯1+♯7, A♭M11♯5+♯1, A♭M11♯5+♯2, Gdim+2+4+♯1+♯3.

Nearby chords (one more note): B13♯5+♯1+♯7, G13♭5+♯1+♯2, A11+♯1+♯2+♯7, G♭11+♯1+♯2+♯4.

Parallel chords (same structure, different root): C9+♯1+♯2+♭1, D9+♯1+♯2+♭1, E9+♯1+♯2+♭1, F9+♯1+♯2+♭1, G9+♯1+♯2+♭1, B9+♯1+♯2+♭1, D♭9+♯1+♯2+♭1, E♭9+♯1+♯2+♭1, G♭9+♯1+♯2+♭1, A♭9+♯1+♯2+♭1, B♭9+♯1+♯2+♭1.

This chord contains too many notes to play on the 6 strings of guitar standard EADGBE tuning (change tuning or instrument).