C6 is the C major 6 chord. Its notes are C, E, G and A. A bright alternative to a plain major chord; common in swing and pop.
How to play C6
Open shape
no fifth
x32210
Partial barre
fret 5
x35555
Barre tip: the long bar marked BARRE means one finger presses several strings at once. Lay it flat just behind the fret, press with the bony outer edge rather than the soft middle, and keep your thumb behind the neck. Pick each string one at a time and nudge the finger until none of them buzz.
Numbers show frets from the low E string to the high e string; x means don't play that string.
What's in C6
C1
E3
G5
A6
Formula
1 · 3 · 5 · 6
Also written
C6
Chord type
Major 6
C6 notes across the neck
Every C, E, G and A on the first 12 frets. The filled dots are the root, C. Build your own shape from any nearby group.