Utawarerumono

Summary:
An injured, amnesiac man with a mysterious mask is found abandoned in the forest. After he is nurtured back to health, he is given the name Hakuoro. After saving the village from a wrathful deity, he adopts the role of the village's leader. Although wishing to live in peace, fate eventually forces him down the path of war and battle...

Songs:

Opening Theme:

"Musouka" by Suara

Ending Theme:

#1: "Madoromi no Rinne" by Eri Kawai (eps 1-25)

#2: "Kimi ga Tame" by Suara (ep 26) 

Related Links:

Official website (Japanese) - http://www.utaware.net/ 

Wikipedia - http://en.wikipedia.org/wiki/Utawarerumono

Anime News Network - http://www.animenewsnetwork.com/encyclopedia/anime.php?id=5746