Cmaj7 Chord on Ukulele
Cmaj7 = C – E – G – B (Root, Major 3rd, Perfect 5th, Major 7th)
Cmaj7 needs exactly one fretted note, just like plain C major, but it lands a fret lower: index finger on the A string's second fret instead of the ring finger's third, with the G, C, and E strings all open. That single-fret difference between C major (fret 3) and Cmaj7 (fret 2) is the entire physical distance between a plain triad and its smooth, major-seventh-colored cousin — a genuinely tiny movement for a real harmonic upgrade.
Where a plain C major triad is simply "home," Cmaj7 adds the major seventh (B) on top, a note a half-step below the octave that gives the chord a soft, dreamy dissonance rather than the aggressive pull of a dominant seventh like C7. It works as a richer substitute for the I chord in the key of C, common in jazz-influenced, bossa nova, or soft pop-leaning ukulele arrangements that want a more sophisticated color than the plain triad offers without introducing any real tension needing resolution — a major seventh chord is stable on its own, unlike a dominant seventh's built-in urge to move to IV. Because it keeps three of its four strings open, it retains almost all of open C's bright ring while adding that extra major-seventh shimmer on top.
Fingerings
Open Position
How to Practice It
Since only the A string moves, and by just one fret compared to plain C major, this is an easy substitution to practice: play C, then slide the ring finger's job over to the index finger one fret closer to the nut, and listen for how the chord's color softens rather than resolves. Try ending a I-IV-V-I progression on Cmaj7 instead of plain C to hear how it changes a song's final landing from settled to lightly unresolved-sounding, in a pleasant rather than jarring way. It's also worth comparing directly against C7 (which frets the same string one fret up instead), since hearing major seventh versus dominant seventh back to back on the identical string is one of the clearest ways to internalize the difference between those two colors.
Common Progressions
- Imaj7 as a softened tonic (Cmaj7 in place of C to close a I – IV – V – I)
- Imaj7 – vi – ii – V (Cmaj7 – Am – Dm – G)
- IVmaj7 in the key of G (Cmaj7 – G)
- A static Cmaj7 vamp works well under a slow, reflective melody line.
FAQ
- How does Cmaj7 differ from plain C major on ukulele?
- Only the A string changes, moving one fret closer to the nut — third fret for the plain triad, second fret for the major seventh — everything else stays identically open.
- Does Cmaj7 need to resolve the way C7 does?
- No — a major seventh chord is harmonically stable on its own, unlike a dominant seventh's built-in pull toward a IV chord, so Cmaj7 can sit comfortably as a destination chord, not just a passing one.
- What kind of music leans on Cmaj7 the most?
- Jazz-influenced, bossa nova, and softer pop-style ukulele arrangements reach for it often, wanting a more sophisticated color than the plain triad without adding real tension.
- How can a beginner hear the difference between Cmaj7 and C7?
- Play them back to back — both fret only the A string, one fret apart, so the ear can isolate exactly how that single fret shifts the chord from a soft, dreamy major-seventh color to a sharper, more urgent dominant-seventh pull.
- Does Cmaj7 work as a substitute anywhere besides the I chord?
- Yes — as IVmaj7 in the key of G, it offers the same softened, non-resolving color in place of a plain IV chord, useful whenever a G-major progression wants a moment of reflective stillness rather than forward pull.
- Is Cmaj7 harder to strum cleanly than plain C major?
- Not really — since it's still a genuine one-finger shape with three open strings, the main adjustment is simply training the ring finger's habitual reach toward the third fret to stop one fret short, which takes a handful of deliberate repetitions rather than any new technique.
- What note does Cmaj7 add, and where does it sit on the fretboard?
- It adds B, the major seventh above C, and on this voicing that note comes from fretting the A string's second fret — the only fretted note in the entire chord, with G, C, and E all ringing open beneath it.
Cmaj7 on other instruments: Cmaj7 on Guitar, Cmaj7 on Piano. Related: how chords are built, chord finder.