David Koresh’s sermon from 1993. Koresh (real name Vernon Howell) was the leader of the Branch Davidian religious sect that became notorious after the deadly 1993 siege at Waco, where the FBI and the sect had a standoff that in ended in tragedy.
Drug kingpin and mass murderee Pablo Escobar’s calls to his wife just days before he was killed by the Colombian special forces.
Serial killer Richard “The Night Stalker” Ramirez calls a guy from death row and negotiates the sale of his artwork.
A woman named Amber Tuccaro records a portion of a conversation between her and the man who probably murdered her. The man may have been a serial killer.
The Ulvila murder emergency phone call. In 2006, a supposed unknown intruder broke into a family’s home in the middle of the night in Ulvila, Finland and murdered the father. The wife/mother made a emergency call that was released some years later. The case is still unsolved.
The first audio recording ever made, accomplished with a “phonoautograph”. The recording is from around 1860.
Reconstruction of what an Aztec death whistle sounded like. It is believed to have been used before human sacrifices.