The Federation is a hip-hop group from Fairfield, California, part of the San Francisco Bay Area. The group consist of Doonie Baby (now Doon Koon), Stressmatic, and Goldie Gold, along with their producer Rick Rock. Rick Rock and Doonie Baby's friendship and collaborative work dates back to the early '90s in Alabama, where they recorded as two-thirds of the group Cosmic Slop Shop along with Big Lurch. At age 16 and using a wheelchair after being shot, the Nevada-born, Fairfield/Vallejo-raised Federation member Goldie Gold met Rick Rock at a local mall, impressing Rock with his rapping skills. In 2002, Rick Rock recruited Doonie Baby, Goldie Gold, and Mr. Stress to form the group.
Their first single "Hyphy", which featured E-40, debuted in 2003, the title soon becoming an established slang term in Bay Area hip-hop music. The group's self-titled debut album was released under Virgin Records to good critical reception. In 2005, Rick Rock signed the group under Reprise Records, releasing the group's follow-up album It's Whateva in the summer of 2007.
In 2009, Stressmatic was featured in an interview in the book How to Rap, along with several other rappers, including E-40, Nelly, Tech N9ne, Twista, Pusha T, Styles P, will.i.am, DJ Quik, Kool G Rap, N.O.R.E. & Chuck D.