Conversation so far:
How did Corey Taylor get involved with the band, Slipknot?
In Des Moines, Iowa, Joey Jordison, Shawn Crahan, and Mick Thomson approached Corey Taylor asking him to join Slipknot.
Was Corey Taylor in a band before Slipknot?
Corey Taylor and Jim Root joined Stone Sour and re-started the band around 1995. He joined Slipknot in 1997.
When was Corey Taylor's first show with Slipknot?
Corey Taylor's first gig with Slipknot was on August 24, 1997.
How was Corey Taylor's first show with Slipknot?
According to Slipknot band members, the first gig did not go well.
What happened with Corey Taylor's first gig with Slipknot?
During his first gig with Slipknot, Corey Taylor was performing with a facepaint instead of a mask.

Question: What kind of mask did he wear after that show?
Self-contained rewrite: What kind of mask did Corey Taylor wear after his first gig with Slipknot?