You know, I was assembling some chords for you before Q reminded me that I'd submitted links to sheet music, at which point I erased my post-in-progress. Sorry!
I'll try to recreate it later today (I'm supposed to be working...), but I can't promise it will be in the same key as the sheet music. I also can't promise they'll be the right chords for you; I've always performed this a capella and hence hear vocal harmonies rather than instrumental. Lots of sevenths.