This is an 18th-century French song. Au Clair de la Lune, or translated as By the Light of the Moon is very easy to learn and nowadays sang as a lullaby.

Now, one of the most recognizable melodies in the world is a variation of an old French song named Ah! vous dirai-je, maman (Oh! Shall I tell you, mommy). The name under which it is most recognizable ...