B♭6+♯11+♭1
B flat major sixth, add sharp eleventh, 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: C13-1, B♯13-1, Gm9+♯6, Gm9+♯13, A♯6+♯4+♭1, B♭6+♯4+♭1.
Notes in this chord: B♭♭, B♭, D, F, G, E. Integer notation: {2, 4, 5, 7, 9, 10}.
Keys in which this chord fits with enharmonic spelling: FM, E♯M, Dm
Nearby chords (one less note): Gm9, Gm9♭7, B♭6+♯4, Dm+2+4, B♭+♯4+♭1, Edim+4+♯1.
Nearby chords (one more note): C13, FM13♯5, FM13♭5, C13-1+♯2, C13-1+♯4, C13-1+♯5.
Parallel chords (same structure, different root): C6+♯11+♭1, F6+♯11+♭1, G6+♯11+♭1, E♯6+♯11+♭1, B♯6+♯11+♭1.
Experimental fretting charts for guitar standard EADGBE tuning (change tuning or instrument):
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