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In March, the Konzerthaus on Gendarmenmarkt is hosting Festival Mythos Berlin, a series of concerts and events celebrating 1920s Berlin. The highlight of the festival is the European premiere of Marc Blitzstein's 1928 one-act opera Triple Sec. Die Sünde des Lord Silverside.Unfortunately, the organisers have missed the opportunity to include the Konzerthaus's own role in Weimar history as the backdrop of Gustaf Gründgens' career in the early 1930s – the subject of Klaus Mann's infamous novel Mephisto.