B♭4+7+♯2+♭1

B flat dominant fourth, add seventh, 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: AM11♭5♭9, F13♯5♯9-1, B♭4+7+♯2+♯7, A♭sus4+2+♯1+♯4, A♭sus4+2+♯1+♭5, A♭sus4+2+♯1+♯11.

Notes in this chord: B♭♭, B♭, C♯, D, E♭, A♭. Integer notation: {1, 2, 3, 8, 9, 10}.

Nearby chords (one less note): A4+♯1+♯4, A4+♯1+♯7, B♭4+7+♯2, A♭sus4+2+♯1, A♭sus2+♯1+♯4, A♭sus4+♯1+♯4.

Nearby chords (one more note): F13♯5♯9, AM11♭5+♯1, A11♭5♭9+♯7, B♭11♯5♯9+♯7, B♭11♯9♭5+♯7, A♭+2+4+♯1+♯4.

Parallel chords (same structure, different root): E♭4+7+♯2+♭1, A♭4+7+♯2+♭1.

Experimental fretting charts for guitar standard EADGBE tuning (change tuning or instrument):

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