A major, add second, add sharp second, add sharp fourth, add sharp fifth

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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: B11♭5+♯1, B11♭5+♭2, B11♭5+♭9, C♭11♭5+♯1, C♭11♭5+♭2, C♭11♭5+♭9.

Notes in this chord: A, B, B♯, C♯, D♯, E, E♯. Integer notation: {0, 1, 3, 4, 5, 9, 11}.

Nearby chords (one less note): B11♭5, B11♭5♭9, B9♭5+♯1, A+2+♯2+♯4, A+2+♯2+♯5, A+♯2+♯4+♯5, C♭♭5+2+4+♯1.

Nearby chords (one more note): B13♭5+♯1, G13♯5+♯4, B11+♯1+♯4, B11♭5+♯1+♯2, B11♭5+♯1+♯7.

Parallel chords (same structure, different root): C+2+♯2+♯4+♯5, D+2+♯2+♯4+♯5, E+2+♯2+♯4+♯5, F+2+♯2+♯4+♯5, G+2+♯2+♯4+♯5, B+2+♯2+♯4+♯5, D♭+2+♯2+♯4+♯5, E♭+2+♯2+♯4+♯5, G♭+2+♯2+♯4+♯5, A♭+2+♯2+♯4+♯5, B♭+2+♯2+♯4+♯5.

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