Rarely has a radio institution left such a mark on music history in such a short space of time. Founded in 1951, the WDR Studio for Electronic Music hit the headlines early on, at times transforming Cologne into the metropolis of new music, attracting not only composers. Radio Cologne Sound traces the eventful history of the studio in essays, recordings, pictures and personal memories: from the golden 50s and 60s through times of opening and stagnation to the late heyday. Three portraits are dedicated to the studio directors Herbert Eimert, Karlheinz Stockhausen and York Höller. Other texts shed light on the intense interplay between technology and