Celtic Frost was a heavy metal band from Zürich, Switzerland. They are known for their heavy influence on the extreme metal genres, particularly black metal. The group was first active from 1984 to 1993, and re-formed in 2001. Following Tom Gabriel Fischer's departure in 2008, Celtic Frost decided to break up again. The band was inspired by heavy metal groups such as Black Sabbath, Judas Priest, Venom but also by gothic rock acts like Bauhaus, Siouxsie and the Banshees and Christian Death and the hardcore punk group Discharge.