Fifty years ago today, 18-year-old Vera Brandes organized a concert for jazz pianist Keith Jarrett in Cologne, West Germany, which went on to make music history: a recording of the concert became the best-selling solo jazz album ever as well as the best-selling piano recording ever. Now director Ido Fluk and producers Sol Bondy and Fred Burle from One Two Films have made a film, titled “Köln 75,” that dramatizes the events leading up to the concert, with its world premiere to be held at the Berlinale next month. Varietyspoke to Brandes about her memories of the night. Bankside is handling the international sales on the film, whose poster is exclusively revealed below.