Dances from 'The Cossacs'. Par ELLING CATHARIUS. The Opera “The Cossacs” by Catharinus Elling is based on the Nikolai Gogol novel about Taras Bulba. “The Cossacs” was premiered in 1897 at Eldorado in Kristiania (the old name on Norway’s capitol Oslo). Despite positive response in the papers of that time, the opera was newer performed again in it’s entirely. The Norwegian Broadcasting Corporation h…