Howard Shore - Misty Mountains Cold chords

Since the song is accapella, this is my version of the chords:
[ Tab from: http://www.guitaretab.com/h/howard-shore/367732.html ]
     Am
Far over the misty mountains cold
            Em               Am
To dungeons deep and caverns old
        Em                Bm
We must away ere break of day
            C      Bm      Am
To seek the pale enchanted gold.

Originally, they sing it from G#, but this is how I play it.