The standard grips this chord is usually shown with.
Cmaj7 is C, E, G and B — C with the major seventh added on top.
It sounds lush, and only just resolved. The everyday tonic of jazz, bossa and neo-soul.

| C | E | G | B |
|---|---|---|---|
| 1 | 3 | 5 | 7 |
Tonic — a resting chord, but a soft one.
Also written CM7, CΔ7, CΔ, Cma7 or C major 7. The same chord either way; which spelling you meet depends on who wrote the chart.
Cmaj7 in root position puts C in the bass, which is the chord as it is spelled: the note it is named after underneath everything else.
7 of Cmaj7’s 8 common shapes do this: x32000, x3241x, x35453, xxx557, 8-10-9-9-8-8, x-x-10-12-12-12, x-15-14-12-12-12.
Start with x32000 — no barre and 3 open strings. 1 of the 8 shapes here sits in open position. 4 of the 8 need a barre. Together they cover the neck from the 1st fret to the 15th.
| Frets | Where | Bass | Top | Hand |
|---|---|---|---|---|
| x32000 | open position | C, root position | E | 3 open strings |
| x3241x | 1st fret | C, root position | C | all fretted |
| x35453 | 3rd fret | C, root position | G | all fretted |
| xxx557 | 5th fret | C, root position | B | all fretted |
| xx5557 | 5th fret | G, 2nd inversion | B | barred |
| 8-10-9-9-8-8 | 8th fret | C, root position | C | barred |
| x-x-10-12-12-12 | 10th fret | C, root position | E | barred |
| x-15-14-12-12-12 | 12th fret | C, root position | E | barred |
The same notes rebuilt from scratch give 4 shell, 13 drop 2, 9 drop 3 and 6 open string voicings, each on its own page.
Tensions. A shell of Cmaj7, root, third and seventh, leaves a string free, and the tones that belong over it are the 9 (D), the #11 (F#) and the 13 (A).
How you get to it. The turn that lands on Cmaj7 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 Cmaj7 belongs to C major (the I, the tonic), E minor (the ♭VI), G major (the IV, the subdominant) and A minor (the ♭III).
Every note of Cmaj7 is in C major and C lydian.
Change one note of Cmaj7 and you have C (drop the major seventh), Cmaj7b5 (the fifth becomes a flat fifth), Cmaj7#5 (the fifth becomes a sharp fifth), Cmaj9 (add the ninth), CmMaj7 (the major third becomes a minor third) or Cadd9 (the major seventh becomes a ninth).
Cmaj7 is a major chord — root, major third, fifth. Major chords on every root.
On Cmaj7’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.
Shows each chord the way this style would voice it, and marks which of its alternatives belong to the idiom.