Previously, I published an Orcish lullaby based on the Lay of Leithian composed in English. And after a long time the poetical translation into Nûrlâm is now complete! You can read it at Nûrlâm's wiki.
By the way, the Nûrlâm's dictionary now has more than 2000 words! But a significant revision is coming...
I’ll sing ye famous song, how in the days of yore,When flat was our world, when Rings have not yet been made,Our first Dark Lord defeated was by Elfin maid,Where others failed; Tinúviel was name of her.
Idea of making a lullaby from Lay of Leithian came to me after reading a Russian translation of “Beren and Luthien” book, where line “Down crumpled Orc, down Balrog proud” resembled the song “Sleep tired toys, books are asleep…” from a children show. But making a lullaby for Orcs required changes to be made, for example baby-orc should be afraid of Lúthien. I've also made a quick research to be sure that scary lullabies are the thing in almost every culture.