Legendary Czechish black/dark metal band started in 1987. Their older albums "The Revelation" or "Hell Symphony" or "The Temple in the Underworld" are considered to be black metal classics, while "The Book", "Black Seal" or "Madness of the Graves" are sophisticated dark metal masterpieces.

Their harismatic front man, Big Boss, is well known from participation on albums of Moonspell, Behemoth or Helheim. The band's trademark are spectacular, energetic live shows. Each of them is a celebration of a real black mass.

Their new, 9th full-lenght album was released in autumn 2011 on a CD and noble LP by Agonia Records. In 2013 the band released an anniversary live album, "Viginti Quinque Annis In Scaena".