Luciano Berio's Un re in ascolto is based on a complex web of sources – writings by Calvino, Barthes, Kafka, Auden, Shakespeare and others – themselves intricately interrelated through games of citation and revision. Linking all these texts is a scene in which a male artist is confronted by a voice outside of his control. This scene is re-enacted – unexpectedly – at the climax of Berio's work. In this new context the unruly voice sounds like a revenant from a form long presumed dead: pure opera and absolute madness.