Eusko Abendaren Ereserkia
"Eusko Abendaren Ereserkia" ("Anthem of the Basque Race"), also known as "Euskadiko Ereserkia" ("Anthem of the Basque Country"), is the official anthem of the Basque Country in northern Spain. The lyrics were written by Basque nationalist writer Sabino Arana, and its melody is based on an old Basque tune.
Source: Wikipedia — Eusko Abendaren Ereserkia (CC BY-SA 4.0)