Iron Maiden - Twilight Zone, USSR x-ray record. This is a piece of music history.
Short history: Recordings like these were hand made and sold in the USSR illegally, since communists forbade almost all western music. Such recordings
were made underground at own risk, and one could get a life in prison for making them. They didn't have anything else to record on, so someone got the idea to record music on discarded x-ray scans from hospitals, making each record one of a kind. This particular Iron Maiden record is recorded on someones spine. NOTE: the record itself sounds really bad, with a lot of background noise, it also skips on two places. This isn't meant for high end sound fans, but for collectors of music history.