Since the band wanted to keep their percussive sound, Greg Welts joined the band to replace Colsefini. Towards the end of 1997, each band member picked an a number to identify themselves. In 1998, Welts became the only member to be kicked out of the band and he was replaced by Chris Fehn. Slipknot wanted to have a DJ in the band, but had a hard time finding one because "the people [they] knew who were DJs all sucked!" Sid Wilson approached the band after seeing them live. He proceeded to impress the band with his ability and his antics; Wilson was considered "Slipknot material" and his hiring brought the band's line-up to nine members. The final change in the band's line-up came at the latter stages of the recording process of the band's debut album, "Slipknot", in 1999. While the band took a break from recording the album, Brainard decided to leave the band and was replaced by Jim Root.