Lúthien came to the halls of Mandos, where are the appointed places of the Eldalië, beyond the mansions of the West upon the confines of the world. There those that wait sit in the shadow of their thought. But her beauty was more than their beauty, and her sorrow deeper than their sorrows; and she knelt before Mandos and sang to him.
The song of Lúthien before Mandos was the song most fair that ever in words was woven, and the song most sorrowful that ever the world shall ever hear. Unchanged, imperishable, it is sung still in Valinor beyond the hearing of the world, and the listening Valar grieved. For Lúthien wove two themes of words, of the sorrow of the Eldar and the grief of Men, of the Two Kindreds that were made by Ilúvatar to dwell in Arda, the Kingdom of Earth amid the innumerable stars. And as she knelt before him her tears fell upon his feet like rain upon stones; and Mandos was moved to pity, who never before was so moved, nor has been since.
Therefore he summoned Beren, and even as Lúthien had spoken in the hour of his death they met again beyond the Western Sea.