Ramble On

"Ramble On" is a song from Led Zeppelin's second album, 1969's Led Zeppelin II, which references Mordor and Gollum. The singer is on a quest which is specified toward the end of the song:

Mine's a tale that can't be told/ 'My freedom I hold dear'/ How years ago in days of old when magic filled the air/ 'Twas in the darkest depths of Mordor I met a girl so fair/ But Gollum and the evil one crept up and slipped away with her