This book, co-edited by Raquel Rivera and Alex Arteaga and published by the Ministerio de Educación, Cultura y Deportes (the Spanish ministry of education, culture and sports), configures the last dispositive of the research cell Aurality and Environment. It includes texts by Alex Arteaga, Daniella Cascella, Ana Garcia Varas, Jamie Heckert, Brandon LaBelle, Raquel Rivera, and Salomé Voegelin that address the relationships between practices of hearing and listening and the emerging worlds surrounding the performers of these practices.