Catalogue of the creative production of Alfredo Márquez (Lima 1963) comprisng photography, installations, painting, graphics, digital support, serigraphy, video and recording of various personal and collective experiences. Includes an interview about one of the most intense experiences of theoretical radicalization,aesthetic experimentation and political reinvention emerged in the 1980's, the Taller NN (1988-1991), its preludes and deferred effects, from the perspective of artist. "The title 'Katatay' (Quechan word for shaking) referes to one of Marquez installations. Over thirty-five years, his individual and collective production has been a point of convergence between diverse creative, counter cultural and public scenes such as literature, underground music, ephemeral architecture, scenic arts, activism and the visual arts. The projects assembled here critically review the history of the last decades, and additionally are offered as a testimony of the repression and pain after the internal armed conflict that Peru lived between 1980 and 2000, whose consequences survive in the political events that affects the population to this day" --Page 19.