This dissertation compares works by Primo Levi and Roberto Bolaño through sound readings of their writings. Sound readings are understood as expanded attention to musicality and other auditory aspects expressed in the content and literary form of these works. We seek to point out harmonies and contrasts between the creative expedients of the authors in question. Something that links them beforehand is the fact that their writings are crossed by experiences in totalitarian regimes: Levi is a Shoah survivor, Bolaño dealt with the authoritarianism of Latin American dictatorships. The present work does not try to confront strategies of testimony and fiction — writing procedures that emerge from these experiences — , but assumes, in the writers analyzed, that such registers somehow intersect, forming a sound-textual fabric of singular aesthetic effect that allows several analyses. To perform these analyses, the researcher tries to establish and enunciate certain poetics of listening, particularly those of greater political accent, starting from sound elements such as intensity and rhythm and going through issues such as time, memory, excess, imprecision, death, and art. The dissertation s corpus of analysis is composed of É isto um homem?, A trégua and Os afogados e os sobreviventes, by Levi; the novels 2666, Estrela distante, O Terceiro Reich and Amuleto, and the short story Carnê de baile, by Bolaño. The connection between the works is dynamized by the sonorous-physical concept of resonance, in dialogue with Tato Taborda, and counts on the interlocution of researchers such as Giuliano Obici, Michael J. Shapiro, Marília Librandi-Rocha, and Arthur Nestrovski.