Guillermo Scott Herren is a music producer who has been based in Atlanta, Barcelona and New York. Herren releases music under various aliases, but mainly as Prefuse 73. Herren first released music under the name with 2001's commercially and critically successful Vocal Studies + Uprock Narratives. A year later, a 4-track EP, The '92 Vs. '02 Collection, was released. In 2003, Herren released the full-length album One Word Extinguisher, one of his best known Prefuse 73 albums to date. A companion album, Extinguished: Outtakes, was released afterwards showing off some of the production "outtakes" and remixes that were omitted from the initial full-length.