and did those feet in ancient time

And did those feet in ancient time is a poem by William Blake from the preface to his work Milton (1804). Today it is best known as the hymn Jerusalem, with music by C. Hubert H. Parry (1916). This is considered to be one of England's most popular patriotic songs, often being used as an alternative anthem. It is variously associated (thereby holding a rather odd position) with English nationalism, anti-modernism, post-modernism, socialist ideals, and Christianity. Jerusalem is the official anthem of the British National Party, British Women's Institute, and historically was used by the National Union of Suffrage Societies. The text of the poem was inspired by the legend that Jesus, while still a young man, accompanied Joseph of Arimathea to Glastonbury via the nearby Roman port. Blake's biographers tell us that he believed in this legend. However, the poem's theme or subtext is subject to much sharper debate, probably accounting for its popularity across the philosophical spectrum. The reference to "dark Satanic mills", is not, as many think, a reference to steel or textile mills (which scarcely existed at the time of writing), but a satirical reference to neolithic monuments such as Stonehenge, which Blake thought were Satanic. Other interpretations are that the line was a coded jibe at either the established Church or the (then) theologically dominated universities at Oxford and Cambridge. It is mentioned in several sketches of the television show Monty Python's Flying Circus. Since 2004 it has been played at the beginning of England cricket matches.