“Sumer Is Icumen In” (also called the Summer Canon and the Cuckoo Song) is a medieval English rota of the mid-13th century.
Svmer is icumen in
Awe bleteþ after lomb
murie sing cuccu
Sing cuccu nu • Sing cuccu.
Summer has arrived,
The ewe is bleating after her lamb,
Sing merrily, cuckoo!
Sing, cuckoo, now; sing, cuckoo;