"The Battle of Evermore" is the third song of the album "Led Zeppelin IV", 1971.
It is a folk rock duet sung by Robert Plant and Sandy Denny and the song is well known for its acoustic guitar and mandolin playing by Jimmy Page.
Overview: Vocalist Robert Plant had recently been reading about Scottish folklore and this inspired him to compose the lyrics to this song. The song, like some others by the group, makes references to The Lord of the Rings by J. R. R. Tolkien. Plant felt he needed another voice to tell the story and for the recording of this song folk singer Sandy Denny was invited to duet with Plant.