Cmaj9 guitar chord
An open string left ringing against a fretted grip. Because it costs no finger, it sounds a note the closed shape has none left for -- a tension on top, or a pedal root underneath. Either a familiar grip with open strings added, or a shape so sparse the open strings carry the chord. These belong to their key rather than to a shape, so D, A, G and E have many and Eb a handful.
- Tap a note to hear it
- Arrows change position
- Fingers, notes or intervals
- Play the chord
About Cmaj9 — open string voicings
Cmaj9 is C, E, G, B and D — Cmaj7 with the ninth stacked above it.
It sounds a maj7 with more air in it. The ninth argues with nothing here, so it works anywhere a maj7 does.
Cmaj9 notes and formula
| C | E | G | B | D |
|---|---|---|---|---|
| 1 | 3 | 5 | 7 | 9 |
Tonic — an extended resting chord.
Also written CM9, CΔ9, Cma9 or C major 9. The same chord either way; which spelling you meet depends on who wrote the chart.
How to play Cmaj9
An open string left ringing against a fretted grip. It costs no finger, so it can sound a note the closed shape has none left for: a tension on top, or a pedal root underneath.
These belong to their key rather than to a shape: they cannot be moved up the neck. D, A, G and E have many; E♭ has a handful.
Cmaj9 has 6 of them, on strings 6-5-4-3-2-1, strings 6-5-4-3-2 and strings 5-4-3-2-1, from the 2nd fret up to the 5th — every inversion the chord has: E in the bass, G in the bass and D in the bass. The one to learn first is the E shape at the 2nd fret, which is the easiest grip here.
3 of them sit on strings 6-5-4-3-2-1, so you can run the inversions up one set without changing strings — which is the whole reason to learn them as a family rather than as separate grips.
Start with x30000 — no barre and 4 open strings. 1 of the 13 shapes here sits in open position. 7 of the 13 need a barre. Together they cover the neck from the 2nd fret to the 15th.
| Frets | Where | Bass | Top | Hand |
|---|---|---|---|---|
| x30000 | open position | C, root position | E | 4 open strings |
| x3243x | 2nd fret | C, root position | D | all fretted |
| 33243x | 2nd fret | G, 2nd inversion | D | barred |
| 055557 | 5th fret | E, 1st inversion | B | barred |
| x55557 | 5th fret | D, 9th in the bass | B | barred |
| xx5757 | 5th fret | G, 2nd inversion | B | all fretted |
| 855557 | 5th fret | C, root position | B | barred |
| 879787 | 7th fret | C, root position | B | barred |
| 8-10-9-9-8-10 | 8th fret | C, root position | D | all fretted |
| x-x-9-9-8-10 | 8th fret | B, 3rd inversion | D | all fretted |
| x-x-10-9-12-10 | 9th fret | C, root position | D | all fretted |
| 12-10-10-12-12-10 | 10th fret | E, 1st inversion | D | barred |
| x-15-12-12-12-12 | 12th fret | C, root position | E | barred |
The same notes rebuilt from scratch give 3 shell, 12 drop 2, 8 drop 3 and 15 rootless voicings, each on its own page.
Tensions. A shell of Cmaj9, root, third and seventh, leaves a string free, and the tones that belong over it are the #11 (F#) and the 13 (A).
How to use Cmaj9
How you get to it. The turn that lands on Cmaj9 is Dm7 to G7 — the ii and the V of C — and G7 shares its third and seventh with Dm7, so the hand barely moves between them.
In which keys. Every note of Cmaj9 belongs to C major (the I, the tonic), E minor (the ♭VI), G major (the IV, the subdominant) and A minor (the ♭III).
What to play over Cmaj9
Every note of Cmaj9 is in C major and C lydian.
Chords near Cmaj9
Change one note of Cmaj9 and you have Cmaj7 (drop the ninth), Cmaj11 (add the fourth), Cmaj13 (add the sixth), CmMaj9 (the major third becomes a minor third), Cadd9 (drop the major seventh) or C69 (the major seventh becomes a sixth).
Cmaj9 is a major chord — root, major third, fifth. Major chords on every root.
On Cmaj9’s sound and use this page follows Mark Levine, The Jazz Theory Book (Sher Music, 1995). The shapes and the derived voicings come from different places, and both are explained in where the chords and the theory come from.