A4+♭2

A major fourth, add flat second

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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: A4+♯1, A4+♭9, A♯3+♯2+♯7, A♯3+♯7+♯9, B♭3+♯2+♯7, B♭3+♯7+♯9.

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

Nearby chords (one less note): A4, A3+♯1, D5+♯5, B♭3+♯2.

Nearby chords (one more note): A+4+♯1, A4+2+♯1, A4+7+♯1, A4+♯1+♯2, A4+♯1+♯4, A4+♯1+♯7, B♭+♯2+♭1, G♭+♯2+♯5.

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

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