If you mean the bridge at 1:23, they are just walking up 1-2-3-4, holding each note for 2 beats, repeat that 4 times then back to the original verse. The original is in E major, but you can transpose it to C major easily enough. I'm not hearing the verses like you do, though. I just hear a plain 1-4-5 progression, but I'd probably use some pentatonic fills to give it some bounce. I think it's a solid bassline that doesn't need a lot of stuff going on other than what's happening in the original.
If you're just looking for something different to do, that song lends itself to using a C major pentatonic. Just play what you want.
Last edited by Spin Doctor : 08-17-2013 at 10:56 AM.