Watain, a Swedish Black Metal band, was formed in Uppsala in 1998. The name is taken from a recording by the American black metal group Von. Their first release was the 7" EP The Essence of Black Purity on Swedish Grimrune productions, recorded in Necromorbus Studios 1999. The French black metal label Drakkar Productions offered Watain a deal for two full length albums, and the debut album Rabid Death's Curse was released in 2000. After the release, Watain toured and performed alongside bands such as Rotting Christ, Antaeus, Dark Funeral, Malign etc.

In 2003 Watain once again entered the studio, to record their second full-length album Casus Luciferi. The Stellar Dimension Infernal Tour through Europe wich followed was done together with Secrets of the Moon and Averse Sefira. They also toured through 18 countries with Dissection on their two months long Rebirth of Dissection tour in 2004.

Their third full-length album Sworn To The Dark was released in Europe on February 21 2007.