Blasphemy has been played on NTS shows including Crossed Wires w/ Amanda Siegel, with Demoniac first played on 25 August 2013.

Blasphemy was initially formed in 1984 by childhood friends Nocturnal Grave Desecrator and Black Winds and 3 Black Hearts of Damnation and Impurity, joined shortly after by guitarist Caller of the Storms. They went on by various names (including Antichrist and Desaster) before settling for Blasphemy in 1987. Since the early days, the band members have quickly established a reputation for violence and criminal activities. Consequently, most of them had stints in prison and problems with the law; the violence also spread to their live performance with frequent fights and bloodshed both on stage and in the crowd. Black Winds left the band during the first few days of the Fuck Christ Tour in 1993, after problems with bass player Ace Necrosleezer. For the rest of the tour, Ace replaced Black Winds on lead vocals. Blasphemy split up shortly after the Fuck Christ tour, but reformed in 1999, including the original line-up as well as Ryan Förster on the second guitar, and have been somewhat sporadically active ever since.