So, an android, called X7, survived the apocalypse which nuked most humans, along with advanced technology, away. X7 wanders the wasteland, with one, and only one possession. An audio tape of the Michael Jackson song “I’m bad”. He often plays it at campfires, and amazes the simple minded humans with what could only be described as a voice in a box.
He travels to a town, called El Paso, where everyone and their mother are fundamentalist Catholics, and believe in witchcraft and sorcery. X7 doesn’t know, and plays his tape for some small children he sees playing outside the town. Shocked, everyone thinks that X7 has just committed witchcraft, and they plan on taking out his hard drive and destroying it, along with this blasphemous "audio tape" he has in possession.
He must prove himself innocent, so, how could X7 explain what the tape is in the simplest, most understandable terms for people living in an era technologically equivalent to the late 1600?