Celtic Frost were a Swiss extreme metal band from Zürich. They are known for their strong influence on the development of extreme metal and avant-garde metal. Formed in 1981 as Hellhammer, the band became Celtic Frost in 1984 and released their debut, Morbid Tales, that year. This was followed by To Mega Therion and the highly experimental Into the Pandemonium, all of which were widely praised. Their next album Cold Lake saw a new lineup and a radical change of style, which was widely derided. After the release of Vanity/Nemesis, the group disbanded. It re-formed in 2001 and released the critically-acclaimed Monotheist, before disbanding following frontman Tom Gabriel Fischer's departure in 2008.
Their music included elements of various extreme metal styles. Their earlier music was mostly classified as thrash metal and death metal with an experimental streak, while their last album was more akin to doom metal and gothic metal. Celtic Frost were inspired by metal bands such as Black Sabbath, Judas Priest and Venom as well as gothic rock groups like Bauhaus, Siouxsie and the Banshees and Christian Death and by the hardcore punk of Discharge.
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