I listened, and he seems to be playing in the key of B. His basic pattern is a 1-5-6-4 for the song. At the two minute mark, he seems to play a 4-6-4-1 a couple of times. The guy who is playing the bass along with the song is using a lot of notes, but to play it basically, you can stay in the pocket pretty much, adding as you see fit. Tomorrow, I will get out my guitar and verify what I'm saying. I'll try listening to the original without the guy playing. He's good but the extra notes make it hard to pick up the pattern.