An anthology with theoretical and artistic texts developed within the broad context opened by the art movement Fluxus. This book includes texts written by many of the artists who formed and shaped the anti-movement (Yoko Ono, Allan Kaprow, La Monte Young and Robert Filliou), along with other texts developed by artists close to their mode of action, coming from other contexts and geographies, and which were linked to the group tangentially, such as Marta Minujín, Roberto Jacoby, Edgardo Antonio Vigo and collective Zaj. The texts that make up each of the parts of this volume have been selected (and some translated to Spanish) from different books, catalogues, magazines and web pages.