Royal and National Anthem of Australia, “God Save the King” and “Advance Australia Fair” 🇦🇺

Wikipedia: God Save the King" or "God Save the Queen" (depending on the gender of the reigning monarch) is the national and/or royal anthem of the United Kingdom, most of the Commonwealth realms, their territories, and the British Crown Dependencies. The author of the tune is unknown and it may originate in plainchant, but an attribution to the composer John Bull is sometimes made.
“Advance Australia Fair" is the national anthem of Australia. Written by Scottish-born composer Peter Dodds McCormick, the song was first performed in 1878, sung in Australia as a patriotic song. It first replaced "God Save the Queen" as the official national anthem in 1974, following a nationwide opinion survey.