"Ar Hyd y Nos is a Welsh folksong sung to a tune that was first recorded in Edward Jones' Musical and Poetical Relics of the Welsh Bards (1784). The Welsh lyrics were written by John Ceiriog Hughes, and has been translated into several languages, including English and Breton. The melody was used by John Gay in The Beggar's Opera. It is also used in the hymn "Go My Children With My Blessing." The song is highly popular with traditional Welsh male voice choirs, and is sung by them at festivals in Wales and around the world.