Editing Nursery rhyme (section)

===Lullabies===
{{Main|Lullaby}}
The oldest children's songs for which records exist are lullabies, intended to help a child fall asleep. Lullabies can be found in every human culture.<ref name=Opie6>{{harvnb|Opie|Opie|1997|p=6}}</ref> The English term lullaby is thought to come from "lu, lu" or "la la" sounds made by mothers or nurses to calm children, and "{{Not a typo|by by}}" or "bye bye", either another lulling sound or a term for a good night.<ref name="M. Prichard, 1984 p. 326">{{harvnb|Carpenter|Prichard|1984|p=326}}</ref> Until the modern era, lullabies were usually recorded only incidentally in written sources. The Roman nurses' lullaby, "Lalla, Lalla, Lalla, aut dormi, aut lacta", is recorded in a [[scholium]] on [[Persius]] and may be the oldest to survive.<ref name=Opie6 />

Many medieval English verses associated with the birth of [[Jesus]] take the form of a lullaby, including "Lullay, my liking, my dere son, my sweting" and may be versions of contemporary lullabies.<ref name="M. Prichard, 1984 p. 326" /> However, most of those used today date from the 17th century. For example, a well-known lullaby such as "[[Rock-a-bye Baby]]", could not be found in records until the late-18th century when it was printed by [[John Newbery]] (c. 1765).<ref name="M. Prichard, 1984 p. 326" />