Deep Cuts From 1971: ‘The Battle Of Evermore’- Led Zeppelin. From their landmark Led Zeppelin IV album released in November 1971- ‘The Battle Of Evermore’- is a folk duet sung by Led Zeppelin’s Robert Plant and Sandy Denny of Fairport Convention. The song was written by Robert Plant and Jimmy Page. It started when Plant picked up Zeppelin bassist John Paul Jones’s mandolin – he had never played the mandolin before this- and Plant wrote the chords to the song in one sitting. Lyrically the song makes references to a favorite Led Zeppelin theme- The Lord Of The Rings- by J.R.R. Tolkien.