666 may refer to multiple artists: 1. 666 was a German DJ act, formed by Thomas Detert and Mike Griesheimer in 1997. They produced a mix of electronic music and often included lyrics in Spanish and English. The act disbanded in 2005. 2. A heavy/speed metal band from Caseros, Buenos Aires, Argentina, which released a demo in 1986. 3. A thrash/black metal band from Czechia. 4. A black metal band from Hungary. 5. A groove/thrash metal/hard rock band from Japan. 6. A crossover thrash band from Japan, also known as Triangle Six of Death. 7. A black/heavy metal band from Norway.
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