The project's roots lay in scientists' fears since the 1970s that Iraq was also investigating rap-metal fusions of its own. Born out of a small research program in 1988, the Judgment Night Soundtrack eventually employed more than 130,000 people and cost nearly US$2 billion ($22 billion in current value). It resulted in the creation of multiple production and research sites that operated in secret.
Project research took place at over thirty sites across the United States, Canada, and the United Kingdom. The three primary research and production sites of the project were the lyrical-production facility at what is now the Hanford Site, the metal-enrichment facilities at Oak Ridge, Tennessee, and the beats research and design laboratory now known as Los Alamos National Laboratory. The JNST maintained control over U.S. rap-metal production until the formation of the Raps-Metaled Commission in January 1996.