Song of Eärendil
The Song of Eärendil is the longest poem in The Lord of the Rings. In the fiction, it is sung and composed by the Hobbit Bilbo Baggins in the Elvish sanctuary of Rivendell. It tells how the mariner Eärendil tries to sail to a place of paradise, and acquires a Silmaril, a prized sun-jewel. Eventually he and his ship are set in the heavens to sail forever as the light of the Morning Star.
The work is described by the philologist and Tolkien scholar Tom Shippey as exemplifying "an elvish streak ... signalled ... by barely-precedented intricacies" of poetry. This corresponds to the tradition of complex poetic mechanisms seen in the Middle English poem Pearl. The "Song of Eärendil" was written to contrast with another of Tolkien's poems, "Errantry", which uses the same mechanisms to quite different effect. In the narrative, the Hobbit Frodo Baggins, recently healed from a dangerous wound, listens to the poem in Keatsian style.