Kipling's "Pict Song" can be found here. The Picts are a people, not a class, and the song as a whole is not a celebration of them, but a warning against them.

Kipling did write a faery song: The Ballad of Minepit Shaw. It is a sly & skeptical one, tho, full of delicious oxymorons, with a down-to-earth ending.