Jerusalem was written as a poem by William Blake and in 1916 during World War 1 Hubert Parry wrote the music.

It was first sung by the WI in 1924, Belper WI now only sing this together for special occasions.
 
And did those feet in ancient time
Walk upon England's mountain green?
And was the holy Lamb of God
On England's pleasant pastures seen?
And did the countenance divine
Shine forth upon our clouded hills?
And was Jerusalem builded here
Among those dark satanic mills?
Bring me my bow of burning gold!
Bring me my arrows of desire!
Bring me my spear! O clouds, unfold!
Bring me my chariot of fire!
I will not cease from mental fight,
Nor shall my sword sleep in my hand,
Till we have built Jerusalem
In England's green and pleasant land.