A9+4

A dominant ninth, add fourth

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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: A11, A9+♯3, Bm11♯5, C♭m11♯5, G9♭7+♯4, G11♯11♭7.

Notes in this chord: A, C♯, D, E, G, B. Integer notation: {1, 2, 4, 7, 9, 11}.

Keys in which this chord fits with this spelling: DM, Bm

Keys in which this chord fits with enharmonic spelling: C♭m

Nearby chords (one less note): A9, A7+4, G9♭7, A+2+4, G6+♯4, G+2+♯4.

Nearby chords (one more note): A13, E13♯9, A11+♯1, A11+♯2, A11+♯4, G13♯11.

Parallel chords (same structure, different root): C9+4, D9+4, E9+4, F9+4, G9+4, B9+4, C♭9+4, D♭9+4, E♭9+4, F♭9+4, G♭9+4, A♭9+4, B♭9+4, C♯9+4, D♯9+4, E♯9+4, F♯9+4, G♯9+4, A♯9+4, B♯9+4.

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

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