The Fall of Gil-galad
Little is known of the lay itself. According to Aragorn, it was originally written in 'an ancient tongue' (presumably Quenya), but Bilbo Baggins later translated it into the Common Tongue, and taught it to Samwise Gamgee in his younger days. It seems to have told the story of the War of the Last Alliance, at least to the point where Gil-galad aided in the overthrow of Sauron, and was himself slain. Its contents, though, are largely unknown: Sam confirms that it was a long poem, but apart from three introductory stanzas, the text of the lay is lost.