Noun
(music) A genre of Japanese music that originated in the 1960s and often features melodramatic themes.
(music) A genre of political songs spread by members of the Freedom and People's Rights Movement of Japan during the Meiji period (1868–1912).
Source: en.wiktionary.orgPerhaps due to her Demonic heritage, Austrian Polka (in the English manga ) or Enka (in the Japanese manga and TV series ) instantly puts Urd to sleep and she is unable to awaken until the music ceases. Source: Internet