Oh... Rosalinda!! is a 1955 British musical comedy film by the British director-writer team of Michael Powell and Emeric Pressburger. The film stars Michael Redgrave, Mel Ferrer, Anthony Quayle, Ludmilla Tchérina and Anton Walbrook and features Anneliese Rothenberger and Dennis Price. The film is based on the 1874 operetta Die Fledermaus (The Bat) by Johann Strauss, but updated to take place in post-war Vienna as occupied by the four Allied powers: the United States, the United Kingdom, France and the USSR. The music, played by the Vienna Symphony Orchestra under conductor Alois Melichar, has new lyrics by Dennis Arundell, and professional singers dubbed for some of the actors. The choreography is by Alfred Rodrigues, and the production was designed by Hein Heckroth. Oh... Rosalinda!! is a light-hearted Technicolor romp that makes full use of the new CinemaScope process, and is not just a film of a staged production but a filmic operetta. As the film closes in the early hours at the party at the hotel Falke points the message to the representatives of the four powers, while thanking them for their presence: "even the dearest friend loses his attraction if he overstays.... so if you don't mind, go home, please go home"; at which the waltz "Brüderlein, Brüderlein und Schwesterlein"/"Brothers, brothers and sisters" ('Be my friend') starts up. Plot In 1955 Vienna, during its post-war occupation, the black-market dealer Dr. Falke (Anton Walbrook) moves freely through the French, British, American and Russian sectors, dealing in champagne and caviar amongst the highest echelons of the allied powers. After a costume party, French Colonel Gabriel Eisenstein (Michael Redgrave) plays a practical joke on a drunken Falke, depositing him, asleep and dressed as a bat, in the lap of a patriotic Russian statue, to be discovered the following morning by irate Russian soldiers. Falke is nearly arrested until his friend General Orlofsky (Anthony Quayle) of the USSR intervenes. A vengeful Falke plans an elaborate practical joke on his friend, involving Orlofsky, a British major (Dennis Price) who is sent to escort the French colonel to jail for his misdemeanor, Eisenstein's beautiful wife Rosalinda (Ludmilla Tchérina), her maid (Anneliese Rothenberger) and a masked ball where no one is what they seem. Complicating matters is American Captain Alfred Westerman (Mel Ferrer), an old flame of Rosalinda's who is determined to take advantage of her husband's absence deliberately taking the room next to hers. When