Impurity had being unleashed with fervour of the death to expose this band project to the Underground called Demonized, when Antimo Buonnano were on chats with Samuel Olvera and Oscar García on the starts of 2000, to put up some songs for a rehearsal tape on March 2000 with two songs from Demonized and a cover song from the mighty Metal Church. The Intention of this Rehearsal tape was to record it in a decent studio and release it on a 7" format, then American Line Productions get interested in the project and they proposed to release it as a CD Split with brother band Domain. Then Demonized entered Alternative House Studios on April 2000 for the record of the release Split Cd "HellBirth" after this, Demonized was working and searching a deal contract for release a first album and in the transition of 2001 the band was working for new songs for the debut album, several labels were contacted at that time until Evil Vengeance Records was interested in the Blasphemy and soon the label sent the deal contract.