strumming pattern?

Thanks for posting! To my ear, the F works better as a 2-0-1-3 (i.e. with the A-string note raised to C). Also, the suggested E' is a "G/B" in many guitar chord posts, and I think that works well (4-2-3-2, i.e. G chord with the G-string note raised to B).

And to the players out there, don't miss the note for capo on 1st fret - it's where the magic is : )

This is perfect! If you play along with their performance on SNL (the episode hosted by joseph gordon-levitt), this happens to also be in the right key, for those of you without a Capo.