B flat major fourth, add second

music notation
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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♯4+2, A♯4+9, B♭4+9, C2+7+♯2, B♯2+7+♯2, B♭3+2+♯3.

Notes in this chord: B♭, C, D, E♭. Integer notation: {0, 2, 3, 10}.

Keys in which this chord fits with this spelling: E♭M, B♭M, Cm, Gm

Keys in which this chord fits with enharmonic spelling: D♯M, A♯M, B♯m

Nearby chords (one less note): B♭4, B♭3+2, C2+♯2, E♭6-3.

Nearby chords (one more note): Cm9, Cm9♭5, B♭+2+4, A♭+2+♯4, B♭4+2+♯1, B♭4+2+♯2, B♭♭5+2+4, Adim+4+♯1.

Parallel chords (same structure, different root): C4+2, D4+2, E4+2, F4+2, G4+2, A4+2, B4+2, C♭4+2, D♭4+2, E♭4+2, F♭4+2, G♭4+2, A♭4+2, C♯4+2, D♯4+2, E♯4+2, F♯4+2, G♯4+2, A♯4+2, B♯4+2.

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