A4+♯1

A major fourth, add sharp 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: A4+♭2, A4+♭9, A♯3+♯2+♯7, A♯3+♯7+♯9, B♭3+♯2+♯7, B♭3+♯7+♯9.

Notes in this chord: A, A♯, 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+♯1, D4+♯1, E4+♯1, F4+♯1, G4+♯1, B4+♯1, C♭4+♯1, D♭4+♯1, E♭4+♯1, F♭4+♯1, G♭4+♯1, A♭4+♯1, B♭4+♯1, C♯4+♯1, D♯4+♯1, E♯4+♯1, F♯4+♯1, G♯4+♯1, A♯4+♯1, B♯4+♯1.

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

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