Slipknot is the self titled debut studio album by American heavy metal band Slipknot. It was released on 29 June 1999 through Roadrunner Records, following a demo containing a few of the songs which had been released in 1998, and was reissued in December 1999 with a slightly altered track listing and mastering as the result of a lawsuit. It was the first release by the band to be produced by Ross Robinson, who sought to refine Slipknot's sound rather than alter the group's musical direction.