 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 . 
