Coal Chamber is an American nu metal band formed by Dez Fafara and Meegs Rascón in Los Angeles, California in 1993. Prior to Coal Chamber, the two had also created the band She's in Pain, in 1992. The original lineup also consisted of bassist Rayna Foss and drummer Jon Tor. Mike Cox replaced Tor on drums shortly afterwards, and thus the Coal Chamber lineup was complete. After signing to Roadrunner Records, they released their debut album, Coal Chamber, in 1997. Chamber Music followed two years later and featured the band's only charting single in the US, "Shock the Monkey". Their third album, Dark Days, was released in the spring of 2002. Nadja Peulen temporarily replaced Foss on bass for touring commitments, before joining on a permanent basis in 2002. Coal Chamber disbanded in 2003, after ten years together, and then reunited in 2011, with the lineup of Fafara, Cox, and Rascón, along with Chela Rhea Harper on bass. Peulen rejoined the band on bass in 2016, and Coal Chamber released their fourth album, Rivals, in 2015, before disbanding again in 2016. They then reunited a second time in 2022.