The folk music of England is traditionally based music, which has existed since the later medieval period. It is often contrasted with courtly, classical and later commercial music. Folk music has been preserved and transmitted orally, through print and later through recordings. The term is used to refer to English traditional music and music composed, or delivered, in a traditional style. English folk music has produced or contributed to several important musical genres, including sea shanties, jigs, hornpipes and dance music, such as that used for Morris dancing. It can be seen as having distinct regional and local variations in content and style, particularly in areas more removed from the cultural and political centres of the English state, as in Northumbria, or the West Country. Cultural interchange and processes of migration mean that English folk music, although in many ways distinctive, has particularly interacted with the music of Scotland. It has also interacted with other musical traditions, particularly classical and rock music, influencing musical styles and producing musical fusions, such as British folk rock, folk punk and folk metal. There remains a flourishing sub-culture of English folk music, which continues to influence other genres and occasionally to gain mainstream attention.
In the strictest sense, English folk music has existed since the arrival of the Anglo-Saxon people in Britain after 400 CE. The Venerable Bede's story of the cattleman and later ecclesiastical musician Cædmon indicates that in the early medieval period it was normal at feasts to pass around the harp and sing 'vain and idle songs'. Since this type of music was rarely notated, we have little knowledge of its form or content. Some later tunes, like those used for Morris dance, may have their origins in this period, but it is impossible to be certain of these relationships. We know from a reference in William Langland's Piers Plowman, that ballads about Robin Hood were being sung from at least by the late 14th century and the oldest detailed material we have is Wynkyn de Worde's collection of Robin Hood ballads printed about 1495.