"Rule, Britannia!" is a British patriotic song first performed in 1740. Quickly it became a popular song in Britain, particularly in the late 18th and early 19th centuries. The song is often associated with British naval power and the British Empire.
The lyrics of "Rule, Britannia!" celebrate Britain's maritime history and its role in shaping the world. The opening lines, "When Britain first, at Heaven's command, / Arose from out the azure main," describe the mythical origins of Britain as a chosen land with a divine mission. The song goes on to praise British military and naval power, declaring that "Britons never, never, never will be slaves." The song has been performed on many occasions, including at the Last Night of the Proms, an annual classical music concert held in London, where it is often accompanied by flag-waving and patriotic fervour.