The anthology 'Spectra Ex Machina' brings together rare documents pertaining to so-called occult phenomena, most of them taken from little-known archives. In the course of three volumes, this series traces an audio history of parapsychology through the exploration of
spiritualism and haunted houses (vol. 1); musician mediums (vol. 2); experiences of extrasensory perceptions (clairvoyance, psychokinesis, etc.) and electronic voice phenomena (vol. 3). The documents gathered here are, by their extravagance and far-fetched aspects, more than the mere objects of belief one would be tempted to reduce them to. They are vestiges of aberrant phenomena, fossils of an unknown civilisation buried in the depths of the unconscious that are revived, in a way, when we listen to them.