For many their first introduction to the Raudive Tapes were through William Burroughs fictions and articles. The fact is, these mysterious magnetic tapes, which claim to capture the voices of the dead, and were recorded by the Baltic scientist Konstantin Raudive, are not a fiction but a reality (we are not here to judge their scientific objectivity ). These tapes, as rare as Lovecraft's Necronomicon, are now in Sub Rosa's archives.

Dr Konstantin Raudive, a student of Carl Jung, was a Latvian psychologist who taught at the University of Uppsala, Sweden, before devoting the last ten years of his life to Electronic Voice Phenomenon (EVP). He published his book, Breakthrough, in 1971. His early collaborator, F.Jurgenson, whom he met at the very beginning of 1965, awakened Dr. K.Raudive's interest
in EVP research. Raudive spent endless hours studying Jurgenson's books ("Voices from Space", 1964 and "Radio-Link with the Dead", 1967).

From an overwhelming database (ranging about 72,000 samples!), Raudive's mother seems to be statistically the most frequently reported contact personality. She usually addressed her son in the Latgalian dialect.