Question: In what year was the band that sings the song "Before I Forget" founded?
Sentence (from "Slipknot (band)"): After the departure of Jordison, as of December 2015 the only founding member in the current lineup is percussionist Crahan; the other remaining members of Slipknot have been members since the release of the band's 1999 eponymous debut album.
Relevant evidence: No