"Sumer Is Icumen In" (also called the Summer Canon and the Cuckoo Song) is a medieval English rota of the mid-13th century.The title translates approximately to "Summer Has Come In" or "Summer Has Arrived" (Roscow 1999,). The song is composed in the Wessex dialect of Middle English. Although the composer's identity is unknown today, it may have been W. de Wycombe.