Here are the chords to play while singing the song. Normal guitar tuning.
 
You may wanna capo another fret to make it easier to sing.

(sorry for all the dashes. it was the only way I could space things correctly.)

 -------C----------------G
As the moon kindles the night 
-------F-----------------G
As the wind kindles the fire
-------C------------------G 
As the rain fills every ocean
-------- F 
And the Sun the Earth
---------C---------G----------F 
So your heart will kindle my heart 


--------C
Take my heart
--------G 
Take my heart
----------C----G----F 
Kindle it with your heart
-------C------------G 
And my heart cannot be
----------- F 
Kindled without you
-----C----------G----------F 
Your heart will kindle my heart

来源：www.ultimate-guitar.com