The Marcha Real (Spanish pronunciation: [ˈmaɾtʃa reˈal]; lit. ‘Royal March’) is the national anthem of Spain. It is one of only four national anthems in the world – along with those of Bosnia and Herzegovina, San Marino and Kosovo – that have no official lyrics.[2] Although many different lyrics have been made for it in the past, it has never had official lyrics as a national anthem.[3]
https://en.wikipedia.org/wiki/Marcha_Real
This seems, as the kids say, sus.
Guess they thought singing about something could go wrong in the future. Looks like they were right to me!