"God Save the King" is the national and/or royal anthem of the United Kingdom. Most of the 56 Commonwealth realms, their territories, and the British Crown Dependencies sing it on ceremonial occasions alongside of their own national anthems.  The true author of the song is unknown, but it is thought that the composer, John Bull, is responsible for the song. 

The official coronation of King Charles III will be held on May 6, 2023.