This conversation with Mauricio Kagel took place on 16 April 2008 in the studio of Kagel's house in Cologne. Just by looking at the shelves one could learn a lot, seeing how Kagel organized his scores. Each box included everything related to a single work (or group of works), including the ‘Ur-Manuskript’ (primordial manuscript), as he called it, as well as the working copy with the corrections that arose during rehearsals and the contract with the publishing house. The studio enclosed an unsophisticated upright piano, a huge desk and a corner to receive visits like mine.