Bogurodzica  ancient religious hymn of Mary The Mother Of God.
Cantores Minores (Warsaw)
Bogurodzica (The Mother of God) is the oldest Polish religious hymn. Written in
the 10th-13th century. The origin of the song is not clear.

Polish knights sang it as an anthem before the Battle of Grunwald (1410 AD) and
during the battle with the Turkish army at Varna in 1444 AD. Bogurodzica
accompanied also the coronation ceremonies of the first Jagiellonian kings.