A+4+♭1

A major, add fourth, 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: A+♯3+♭1, A+11+♭1, C♯m6+♯1, D♭m6+♯1, C♯m+♯1+♯5, D♭m+♯1+♯5.

Notes in this chord: A♭, A, C♯, D, E. Integer notation: {1, 2, 4, 8, 9}.

Keys in which this chord fits with enharmonic spelling: AM, G♭m, F♯m

Nearby chords (one less note): A+4, A+♭1, E4+7, A4+♯7, D♭m+♯1.

Nearby chords (one more note): AM11, E13-5, AM11♯9, AM11♭9, A7+4+♯7, A+4+♯4+♭1, D♭+♯1+♯2+♯5.

Parallel chords (same structure, different root): C+4+♭1, D+4+♭1, E+4+♭1, F+4+♭1, G+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, 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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