Exhorder was a thrash/groove metal band formed in New Orleans, Louisiana during the late 1980s. They are often credited as the purveyors of the groove-oriented thrash sound later made famous by bands such as Pantera, Machine Head, and White Zombie. Biography Exhorder was formed in 1985 in New Orleans and was one of the bands that helped shape the "Louisiana sound," a common sound shared between many metal bands from the state. They released two demos, one in 1986 called Get Rude, and another one, Slaughter in the Vatican in 1988. Exhorder split up shortly after the recording of the demo, but reformed with new guitarist Jay Ceravolo (who replaced David Main). Slaughter in the Vatican, the band's first full-length album, was released in 1990. The album was spawned from the 1988 demo of the same name, and solidified their chugging tight riffs with a rigid structure style. Although dismissed by some because of