|6||x or G||3rd fretfr.||optionalopt.|
Guitar chords in the key of C major:
Chord Cmaj7 notes: (G), C, E, G, B and E.
The note G on the sixth string is not required, but can be played on the 3rd fret if needed. The strings 3(G), 2(B) and 1(E) are left open.
C major 7th guitar chord's alternative names: CM7, Cmaj7.
1(C), 3(E), 5(G), 7(B).