Danube name meaning "strong, swift" (akin to Sanskrit "iṣiras" "swift"). In Latin, the Danube was variously known as ' or as '. The Dacian/Thracian name was "Donaris" for the upper Danube and "Istros" for the lower Danube. The Thraco-Phrygian name was "Matoas", "the bringer of luck". The Latin name is masculine, as are all its Slavic names, except Slovenian, (the name of the Rhine is also masculine in Latin, most of the Slavic languages, as well as in German). The German "Donau" (Early Modern German "Donaw, Tonaw", Middle High German "Tuonowe") is feminine, as it has been re-interpreted as containing the
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,