I don't actually know if this is the original key, but it's easy to play,
even after the key change.  It's not really a guitar song but what I tried
to illustrate in the chords is that I think it should start out simple and
get more complex as it goes on.  You can elaborate on that by switching from
slow, even strums to faster and more syncopated strums.  I feel like it
should break open at "another winter" and again at "the moon's a fingernail."
I also put in four chords at the end that I think make a nice ending.  Comments welcome please.

CI (x32010@1)watch the Western sky
            CThe (x32010@1)sun is sinking
               GThe (320003@1)geese are flying South
            FIt (133211@1)sets me thinking

FI (133211@1)did not miss you much
           GI (320003@1)did not suffer
              FWhat (133211@1)did not kill me
              CJust (x32010@1)made me tougher

C (x32010@1)       FI (133211@1)feel the winter come
          CHis (x32010@1)icy sinews
            GNow (320003@1)in the fire light
             F (133211@1)     G (320003@1)
The case continues
         FAnother (133211@1)night in court
              GThe (320003@1)same old trial
              F (133211@1)              GThe (320003@1)same old questions asked
          CThe (x32010@1)same denial

C (x32010@1)            FThe (133211@1)shadows close me round
            CLike (x32010@1)jury members
            GI (320003@1)look for answers in
           F (133211@1)      GThe (320003@1)fire's embers
           FWhy (133211@1)was I missing then
            GThat (320003@1)whole December
           F (133211@1)        GI (320003@1)give my usual lie:
          CI (x32010@1)don't remember

AmAnother (x02210@1)winter comes
         GHis (320003@1)icy fingers creep
            FInto (133211@1)these bones of mine
                CThese (x32010@1)memories never sleep
               G (320003@1)          FAnd (133211@1)all these differences
            GA (320003@1)cloak I borrow
              FWe (133211@1)kept our distances
               F (133211@1) G (320003@1)             CWhy (x32010@1)should it follow I must have loved you

Am (x02210@1)                    GWhat (320003@1)is the force that binds the stars
F (133211@1)                  C (x32010@1)    GI (320003@1)wore this mask to hide my scars
Am (x02210@1)                    GWhat (320003@1)is the power that pulls the tide
F (133211@1)                   C (x32010@1)      GI (320003@1)never could find a place to hide
Am (x02210@1)                   GWhat (320003@1)moves the Earth around the sun
F (133211@1)                  C (x32010@1)    G (320003@1)      FWhat (133211@1)could I do but run and run and run
FAfraid (133211@1)to love, afraid to fail
F (133211@1)               GA (320003@1)mast without a sail

D (xx0232@1)          A (x02220@1)      DThe (xx0232@1)moon's a fingernail and slowly sinking
         A (x02220@1)                     G (320003@1)     AAnother (x02220@1)day begins and now I'm thinking
           G (320003@1)                  AThat (x02220@1)this indifference was my invention
           G (320003@1)                     A7When (x02020@1)everything I did sought your attention

D (xx0232@1)           AYou (x02220@1)were my compass star
             DYou (xx0232@1)were my measure
            AYou (x02220@1)were a pirate's map
           G (320003@1)       AA (x02220@1)buried treasure
             GIf (320003@1)this was all correct
                AThe (x02220@1)last thing I'd expect
          GThe (320003@1)prosecution rests
               A7 (x02020@1)                     DIt's (xx0232@1)time that I confess: I must have loved you

G (320003@1)A (x02220@1)A7 (x02020@1)D