A+♭1+♭5

A major, add flat root, add flat fifth

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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: C♯m6+2, C♯m6+9, D♭m6+2, D♭m6+9, A+♯4+♭1, A+♯11+♭1.

Notes in this chord: A♭, A, C♯, E♭, E. Integer notation: {1, 3, 4, 8, 9}.

Keys in which this chord fits with enharmonic spelling: EM, F♭M, D♭m, C♯m

Nearby chords (one less note): A+♯4, A+♭1, D♭m+2, E4+♯7, A♭sus4+♯1.

Nearby chords (one more note): B13-1, B13-5, E♭11♭5♭9, A+4+♯4+♭1, A+♯1+♯4+♭1, A♭+4+♯1+♯5, D♭+2+♯2+♯5.

Parallel chords (same structure, different root): C+♭1+♭5, D+♭1+♭5, E+♭1+♭5, F+♭1+♭5, G+♭1+♭5, B+♭1+♭5, C♭+♭1+♭5, D♭+♭1+♭5, E♭+♭1+♭5, F♭+♭1+♭5, G♭+♭1+♭5, A♭+♭1+♭5, B♭+♭1+♭5, C♯+♭1+♭5, D♯+♭1+♭5, E♯+♭1+♭5, F♯+♭1+♭5, G♯+♭1+♭5, A♯+♭1+♭5, B♯+♭1+♭5.

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

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