Middle finger (2): press flat across the D string to the high E string at the 5th fret, a barre.
Index finger (1): 3th fret of the A string.
Don't play: low E string.
x35555 · A6 shape
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Strumming patterns to try
↓↓↓↓Four downsSteady, for learning changes
↓↓↑↑↓↑Folk / popThe everyday pattern
↓↓↑↓↑BalladSlow songs, 3/4 or 6/8
↑↑↑↑Reggae skankOff-beat chops
About the C6 chord
C sixth is built from 4 notes: C (1), E (3), G (5), A (6). The lowest note you play should be the root, C, highlighted on the diagram. You can play it in 12 places on the fretboard. The first shape is the most common; higher shapes make smooth changes easier in some keys.