The frontman was supposed to have finished the tracks earlier this week but tested positive for coronavirus
He's also set to appear on 'The Metallica Blacklist', celebrating 30 years since the release of 'The Black Album'
The vocalist said "because I had that extra little bit of protection, it definitely helped me get through it"
The metal titans will hit the continent after a run of festival dates
The Slipknot and Stone Sour frontman is currently on tour in support of his solo debut, ‘CMFT’
Morrissey will also curate a line-up of "very special guests" at the Chicago festival
The gig took place as part of the Slipknot frontman's ongoing US solo tour
Not a creepy Slipknot mask in sight
"People are filthy all over the world"
“Nothing hurts more than knowing that we did everything in our power to help and couldn’t get through to him”