Wikipedia
Sängerkrieg
The Sängerkrieg (minstrel contest), also known as the Wartburgkrieg (Wartburg contest), was a contest among minstrels ( Minnesänger) at the Wartburg castle in Thuringia in 1207.
Whether the contest was purely legend or had some basis in an actual event has been debated since the Middle Ages. Local Thuringian historians, such as Dietrich von Apolda (1220 or 1230–1302) and Johannes Rothe (c.1360-1434), in the 14th and 15th centuries respectively, suggested the poems referred to an actual historical event. In the 19th century, Johann Rinne argued that the events never occurred.