What is "bogurodzica"

Bogurodzica (; ) is the oldest Polish hymn. It was composed somewhere between the 10th and 13th centuries. While the origin of the song is not entirely clear, several scholars agree that Adalbert of Prague is the likely author.

Polish knights sang it as an anthem before the Battle of Grunwald. Bogurodzica also accompanied the coronation ceremonies of the first Jagiellonian kings.