"God Save the King" (also known as "God Save the Queen" when the monarch is female) is the de facto national anthem of the United Kingdom. It is one of the two national anthems of New Zealand and the royal anthem of the Isle of Man, Australia, Canada and some other Commonwealth realms. The author of the tune is unknown and it may originate in plainchant, but an attribution to the composer John Bull has sometimes been made.
Beyond its first verse, which is consistent, "God Save the King" has many historic and extant versions. Since its first publication, different verses have been added and taken away and, even today, different publications include various selections of verses in various orders. In general, only one verse is sung. Sometimes two verses are sung and, on certain occasions, three.