B flat dominant eleventh, add sharp second, add sharp fourth

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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: A♯11+♯2+♯4, A♯11+♯4+♯9, B♭11+♯4+♯9, A♯11+♯2+♯11, B♭11+♯2+♯11, A♭13♭7♭13+♯4.

Notes in this chord: B♭, C♯, D, E, F, A♭, C, E♭. Integer notation: {0, 1, 2, 3, 4, 5, 8, 10}.

Nearby chords (one less note): B♭11+♯2, B♭11+♯4, C11♯5+♯1, A♭13♭7♭13, B♭11♯9+♯4, B♭11♭5+♯2, D♭M9+♯1+♯2, B♭+2+4+♯2+♯4.

Nearby chords (one more note): A♭13+♯4+♯5, B♭13+♯2+♯4, C13♯5+♯1+♯2, B♭11+♯1+♯2+♯4.

Parallel chords (same structure, different root): C11+♯2+♯4, D11+♯2+♯4, E11+♯2+♯4, F11+♯2+♯4, G11+♯2+♯4, A11+♯2+♯4, B11+♯2+♯4, C♭11+♯2+♯4, D♭11+♯2+♯4, E♭11+♯2+♯4, F♭11+♯2+♯4, G♭11+♯2+♯4, A♭11+♯2+♯4, C♯11+♯2+♯4, D♯11+♯2+♯4, E♯11+♯2+♯4, F♯11+♯2+♯4, G♯11+♯2+♯4, A♯11+♯2+♯4, B♯11+♯2+♯4.

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