Simplify the following text for a Grade 8 native English-speaking person.
Original: 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 .
Simplified: The final change in the lineup came in the latter stages of the recording of the band 's debut album , Slipknot , in 1999 .