"Rule, Britannia!" is a patriotic song written by James Thomson in 1740, with music composed by Thomas Arne. It celebrates Britain's naval power and the idea of British imperialism, emphasizing the nation's strength and destiny to rule the seas. The song is often associated with the Last Night of the Proms, a famous classical music concert held annually in the Royal Albert Hall in London. It has become a symbol of British national pride and is frequently performed at various national events, reflecting the historical significance of the British Empire.