Source of the Danube of Baden): “Danube, the biggest river of Germany, rises at the Martinskapelle in a wild and lonely area of the Black Forest, is called Brege at its origin and forms the river Danube in Donaueschingen where it is unified with the Brigach." (German original: „Donau, der größte Fluß Deutschlands, entspringt bei der Martinskapelle in einer wilden und einsamen Gegend des Schwarzwaldes, heißt am Anfang Brege… und bildet erst in Donaueschingen, wo sie sich mit der Brigach vereinigt, die Donau.“) The identification of the main spring in the uppermost Bregtal (also called Katzensteig) is dependent on a defining convention: Instead of
Waves of the Danube known as "Danube Waves Waltz." The melody of "Waves of the Danube" was used in what is regarded as Korea's first popular song, "In Praise of Death" by Yun Sim-deok recorded in 1926. The song was recorded in Osaka, where she met and fell in love with a Korean married man. The two boarded a steamship returning to Korea, but ended their lives by jumping into the sea. "Waves of the Danube" became known in the United States only half a century later. Al Jolson and Saul Chaplin published it in 1946 under the name of "The Anniversary Song" ("Oh,