"Advance Australia Fair" is the national anthem of Australia. Written by Peter Dodds McCormick in 1878, it was officially adopted as the anthem in 1984. The song expresses pride in the country's natural beauty and the spirit of its people. The anthem emphasizes themes of unity, freedom, and the promise of a fair and just society. It is often played at national events, ceremonies, and sporting occasions, serving as a symbol of national identity and patriotism for Australians.