Chord · 6ths & Adds

Cm(add9) — C Minor Add 9

Cm(add9) is the C minor add 9 chord. It is built on the root C with minor 3rd (E♭), perfect 5th (G) and major 9th (D) above it — the formula 1 ♭3 5 9, sounding the notes C E♭ G D. On the piano it sits at C (octave 4) and above in the library's voicing; the same 4 notes in any octave are still Cm(add9).

Root
C
Quality
Minor Add 9
Formula
1 ♭3 5 9
Notes
C E♭ G D

On the keyboard

Cm(add9) on the piano keyboard: C E♭ G DCE♭GD

The notes of Cm(add9)

DegreeNoteInterval from the rootPitch
1CrootC4
♭3E♭minor 3rdE♭4
5Gperfect 5thG4
9Dmajor 9thD5

Other 6ths & adds on C

C6Cm6C6/9Cm6/9Cadd2Cadd4Cadd9Cadd11Cm(add11)

Minor Add 9 chords on every root

C♯m(add9)Dm(add9)E♭m(add9)Em(add9)Fm(add9)F♯m(add9)Gm(add9)G♯m(add9)Am(add9)B♭m(add9)Bm(add9)

Part of the chord reference. See also the scales and the keys.