This guy is pretty awesome, and Obviously I am not, lol.

Could I get any help on this simple (sounds like just 3 chords in this 8 second loop)

The song is "Sunshine"


The first 10 secs has the basic chord loop. Then he has it going throughout most of the song. It looks simple but, I cant get anything but a barred A7, and I don't know where it fits in,lol.

Any help is greatly appreciated!