Num Skull, one of the first Midwest thrash bands, was originally formed in 1985. They released their first demo "NUM'S THE WORLD" in 1987. The following year marked a change to a more extreme and heavier sound as exhibited on the band's second demo "Thrash to the Bone". The new material was much faster and the vocals were far heavier. This new style created quite a buzz in the underground and it soon led to a contract with Enigma Records.