Cmaj7
C Major 7th
1 3 5 7

Notes in Cmaj7

CR
E3
G5
B7

The Cmaj7 chord contains 4 notes: C, E, G, B

Intervals

IntervalSemitonesNoteFunction
R0CRoot
34EMajor 3rd
57GPerfect 5th
711BMajor 7th

About C Major 7th Chords

Major 7th chords combine a major triad with the natural 7th, producing a lush, sophisticated sound. Common in jazz, R&B, and neo-soul, maj7 chords feel warm and dreamy without the tension of a dominant 7th.

Compatible Scales & Modes

These scales contain all the notes of Cmaj7 and can be used for soloing, improvising, and writing melodies over this chord.

C Ionian (Major Scale)
The most consonant choice — smooth and resolved.
C Lydian
The jazz player's favorite over maj7 chords. The ♯4 avoids the 'avoid note' of Ionian.
C Major Pentatonic
Safe and melodic — works in any genre over major 7th harmony.

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Playing C major seventh on Guitar

The C major seventh chord, spelled C, E, G, B, occupies a specific harmonic role that depends on the musical context. In the key of C major, the most fundamental key in Western music, this chord can function as a primary harmony or as a passing color depending on where it appears in the progression. Understanding which scale degrees produce C-rooted chords helps you predict chord progressions and improvise melodies that complement the harmony.

On guitar, C major seventh voicings benefit from open position voicings that resonate beautifully on acoustic guitar. The physical shape of this chord on the fretboard determines its tonal character — the same notes arranged in different voicings produce noticeably different sounds due to string gauge, fret position, and overtone content. Experiment with playing C major seventh in multiple positions to find the voicing that best fits the register and texture of the music you are working on.

Cmaj7 adds the major seventh to the triad, creating a smooth, sophisticated sound. Unlike dominant sevenths which create tension, C major seventh chords have a dreamy, resolved quality that makes them staples of jazz, bossa nova, and neo-soul harmony.

When practicing C major seventh, use the compatible scales listed above to improvise melodies and riffs. Start by playing the chord, then explore the scale tones one at a time to hear how each note sounds against the harmony. This ear training exercise connects your theoretical knowledge of C-rooted chords to practical musicianship skills that improve your playing across all genres and styles.