Later uploading the footage to YouTube, Heafy wrote: “This cover was recorded during KiichiChaosKaraoke - a time where subscribers of my Twitch page choose a song for me to learn; timing down the pick by 5 minutes - auction-style.
“Once picked, the song has to be learned and performed in its entirety - immediately - no matter how long it takes.”
Watch the performance here:
Highly prolific, fan-requested songs that Heafy has covered on Twitch in the last seven days alone include Metallica’s ‘Spit Out The Bone’, The Who’s ‘Behind Blue Eyes’ and Sabaton’s ‘The Last Stand’.
Slipknot performed ‘Unsainted’ and previous single ‘All Out Life’ on Jimmy Kimmel Live! on Friday night (17th May). You can watch footage right here:
He wrote: "It is with a broken heart, and from a place of the deepest pain, that I have to inform all of you that my youngest daughter, Gabrielle, passed away yesterday – Saturday, May 18, 2019.
"She was 22 years old. Funeral arrangements will be forthcoming. My family and I ask that our privacy be respected moving forward. Thank you. Much Love. Clown M. Shawn Crahan."
Slipknot's masks through the years:
Slipknot in 2000
Slipknot wearing trademark white boiler suits and their horrorshow masks in 2000.
Watch Trivium's Matt Heafy perform powerful acoustic cover of Slipknot's 'Unsainted'
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Slipknot arrive at the 2024 Grammy Awards
Slipknot arrived at the 2024 Grammy Awards, wearing a variety of different masks with their dress suits.
Slipknot in 2000
Slipknot wearing trademark white boiler suits and their horrorshow masks in 2000.
Slipknot 'Slipknot'
Slipknot on the sleeve of their fearsome, self-titled debut album in June 1999.
Slipknot's in 2000
Slipknot standing in a stairway in early 2000, obviously.
Shawn 'Clown' Crahan and Joey Jordison's mask
Slipknot's Shawn 'Clown' Crahan and the late Joey Jordison in their fetching masks in 2000.
Sid Wilson's mask
Slipknot's Sid Wilson in his gas mask in 2000.
Corey Taylor's mask
Corey Taylor with his dreadlock mask in 2000 - a very different mask to his look today.
Jim Root's mask
Slipknot's Jim Root in 2000 in his Jester mask.
Craig Jones' mask
Slipknot's former keyboardist, Craig Jones, in his bizarre spiked helmet mask in 2000. This would soon evolve into a spiked gimp mask.
Mick Thomson's mask
Slipknot's formidable and towering Mick Thomson in 2000 in his horror hockey mask.
Paul Gray's mask
The late-great Paul Gray of Slipknot in his Pig Mask in 2000.
Chris Fehn's mask
Slipknot's former percussionist Chris Fehn in 2000. His pointy-nosed Pinocchio-esque mask was a mainstay of his entire career with Slipknot. The mask is dubbed the Liar Mask.
Craig Jones' mask
Former member Craig Jones in 2001. His part Hellraiser/part Gimp mask also remained largely unchanged over the decades, except for the odd tweak.
Shawn 'Clown' Crahan's mask
Slipknot's Shawn 'Clown' Crahan in 2001. Although all of his masks have been clown related, the percussionist has tweaked his mask more than any other Slipknot member.
Slipknot
Slipknot's masks in June 2001.
Joey Jordison and Corey Taylor's masks
Slipknot's late Joey Jordison and Corey Taylor in 2001.
Sid Wilson's mask
Slipknot's Sid Wilson in June 2001. Another variant of his gas mask.
Jim Root's mask
Slipknot's Jim Root in 2001.
Shawn 'Clown' Crahan up close
A close-up of Slipknot's Shawn 'Clown' Crahan in December 2001.
Slipknot's evolving masks
Slipknot and their masks in December 2001.
Chris Fehn's mask
Former member Chris Fehn in his Liar Mask in 2002.
Corey Taylor's mask
Slipknot's Corey Taylor in 2002. The dreadlocks still remain.
Shawn 'Clown' Crahan's mask
Slipknot's Shawn 'Clown' Crahan in August 2002. This mask is more 'fairground clown' than his previous guises.
Corey Taylor's mask
Slipknot's Corey Taylor in May 2004. This delightful look is known as The Scab Mask.
Paul Gray's mask
The late Paul Gray in 2004. Not quite a pig mask but still animalistic.
Shawn 'Clown' Crahan's mask
Slipknot's Shawn 'Clown' Crahan in June 2004. This time he adopted a bloody bandage mask.
Slipknot's evolving masks
Slipknot in May 2005. Sid Wilson had dropped the gas mask in favour of a skull mask.
Slipknot at the Grammy Awards
Slipknot on the 2006 Grammy Awards red carpet. Sid Wilson on the far right opted for a death mask, while Shawn Crahan wore a grey mask and eye-catching pink boiler suit.
Slipknot 'All Hope Is Gone'
Slipknot return with new masks for All Hope Is Gone in 2008, including, most notably, the late Joey Jordison's crucified Jesus mask. Corey Taylor wore a new Blank Face Mask.
Mick Thomson and Jim Root's masks
Slipknot's Mick Thomson and Jim Root in their masks in 2008.
Slipknot's evolving masks
Slipknot's Corey Taylor, Jim Root and the late Paul Gray at the Kerrang! Awards in 2008.
Slipknot's evolving masks
Slipknot suited and booted in December 2008 at the MTV Video Awards.
Shawn 'Clown' Crahan's mask
Slipknot's Shawn 'Clown' Crahan in May 2009. His long hair perfectly complements his 'female mask'.
Corey Taylor's mask
Slipknot's Corey Taylor pulling tongues in his Blank Face Mask in July 2009.
Slipknot's evolving masks
Slipknot's Sid Wilson and Shawn 'Clown' Crahan in July 2011.
Shawn 'Clown' Crahan's mask
Slipknot's Shawn 'Clown' Crahan in his Devil Clown Mask in July 2012.
Mick Thomson's mask
Slipknot's Mick Thomson in August 2012.
Jim Root's mask
Slipknot's Jim Root in his Jester Mask in 2013.
Corey Taylor's mask
Slipknot's Corey Taylor at Download Festival 2013.
Chris Fehn's mask
Former percussionist, Chris Fehn, in 2013 in his trademark Liar Mask.
Shawn ‘Clown’ Crahan's mask
Slipknot's Shawn 'Clown' Crahan in January 2014.
Slipknot’s Mick Thomson
Slipknot's Mick Thomson in November 2014.
Slipknot’s Sid Wilson
Slipknot's Sid Wilson in 2015 in his new Gas Mask.
Slipknot's Alessandro Venturella
Slipknot's Alessandro Venturella in 2015.
Slipknot’s Shawn ‘Clown’ Crahan
Slipknot's Shawn 'Clown' Crahan in 2015.
Slipknot’s Corey Taylor
Slipknot's Corey Taylor in 2015.
Slipknot’s Sid Wilson
Slipknot's Sid Wilson in October 2015.
Slipknot’s Jay Weinberg
Slipknot's former drummer, Jay Weinberg, in 2016.
Slipknot’s Corey Taylor
Slipknot's Corey Taylor in 2016.
Slipknot’s Chris Fehn
Slipknot's former member, Chris Fehn, in July 2016
Slipknot’s Jay Weinberg
Former drummer, Jay Weinberg in 2016.
Slipknot’s Shawn ‘Clown’ Crahan
Slipknot's Shawn 'Clown' Crahan in 2016.
Slipknot's Shawn 'Clown' Crahan
Another mask worn by Slipknot's Shawn 'Clown' Crahan in 2016.
Slipknot's new masks for 2019
Slipknot's new masks for 2019
Slipknot unveiled their fearsome new masks for 6th album 'We Are Not Your Kind' on 16th May 2019.
Slipknot's Corey Taylor
Slipknot's Corey Taylor in 2022.
Jim Root in 2023
Slipknot's Jim Root performs on the Pandaemonium stage during Festival Copenhell, in Denmark in 2023.
Slipknot arrive at the 2024 Grammy Awards
Slipknot arrived at the 2024 Grammy Awards, wearing a variety of different masks with their dress suits.
Slipknot in 2000
Slipknot wearing trademark white boiler suits and their horrorshow masks in 2000.
Slipknot 'Slipknot'
Slipknot on the sleeve of their fearsome, self-titled debut album in June 1999.
Slipknot's in 2000
Slipknot standing in a stairway in early 2000, obviously.
Shawn 'Clown' Crahan and Joey Jordison's mask
Slipknot's Shawn 'Clown' Crahan and the late Joey Jordison in their fetching masks in 2000.
Sid Wilson's mask
Slipknot's Sid Wilson in his gas mask in 2000.
Corey Taylor's mask
Corey Taylor with his dreadlock mask in 2000 - a very different mask to his look today.
Jim Root's mask
Slipknot's Jim Root in 2000 in his Jester mask.
Craig Jones' mask
Slipknot's former keyboardist, Craig Jones, in his bizarre spiked helmet mask in 2000. This would soon evolve into a spiked gimp mask.
Mick Thomson's mask
Slipknot's formidable and towering Mick Thomson in 2000 in his horror hockey mask.
Paul Gray's mask
The late-great Paul Gray of Slipknot in his Pig Mask in 2000.
Chris Fehn's mask
Slipknot's former percussionist Chris Fehn in 2000. His pointy-nosed Pinocchio-esque mask was a mainstay of his entire career with Slipknot. The mask is dubbed the Liar Mask.
Craig Jones' mask
Former member Craig Jones in 2001. His part Hellraiser/part Gimp mask also remained largely unchanged over the decades, except for the odd tweak.
Shawn 'Clown' Crahan's mask
Slipknot's Shawn 'Clown' Crahan in 2001. Although all of his masks have been clown related, the percussionist has tweaked his mask more than any other Slipknot member.
Slipknot
Slipknot's masks in June 2001.
Joey Jordison and Corey Taylor's masks
Slipknot's late Joey Jordison and Corey Taylor in 2001.
Sid Wilson's mask
Slipknot's Sid Wilson in June 2001. Another variant of his gas mask.
Jim Root's mask
Slipknot's Jim Root in 2001.
Shawn 'Clown' Crahan up close
A close-up of Slipknot's Shawn 'Clown' Crahan in December 2001.
Slipknot's evolving masks
Slipknot and their masks in December 2001.
Chris Fehn's mask
Former member Chris Fehn in his Liar Mask in 2002.
Corey Taylor's mask
Slipknot's Corey Taylor in 2002. The dreadlocks still remain.
Shawn 'Clown' Crahan's mask
Slipknot's Shawn 'Clown' Crahan in August 2002. This mask is more 'fairground clown' than his previous guises.
Corey Taylor's mask
Slipknot's Corey Taylor in May 2004. This delightful look is known as The Scab Mask.
Paul Gray's mask
The late Paul Gray in 2004. Not quite a pig mask but still animalistic.
Shawn 'Clown' Crahan's mask
Slipknot's Shawn 'Clown' Crahan in June 2004. This time he adopted a bloody bandage mask.
Slipknot's evolving masks
Slipknot in May 2005. Sid Wilson had dropped the gas mask in favour of a skull mask.
Slipknot at the Grammy Awards
Slipknot on the 2006 Grammy Awards red carpet. Sid Wilson on the far right opted for a death mask, while Shawn Crahan wore a grey mask and eye-catching pink boiler suit.
Slipknot 'All Hope Is Gone'
Slipknot return with new masks for All Hope Is Gone in 2008, including, most notably, the late Joey Jordison's crucified Jesus mask. Corey Taylor wore a new Blank Face Mask.
Mick Thomson and Jim Root's masks
Slipknot's Mick Thomson and Jim Root in their masks in 2008.
Slipknot's evolving masks
Slipknot's Corey Taylor, Jim Root and the late Paul Gray at the Kerrang! Awards in 2008.
Slipknot's evolving masks
Slipknot suited and booted in December 2008 at the MTV Video Awards.
Shawn 'Clown' Crahan's mask
Slipknot's Shawn 'Clown' Crahan in May 2009. His long hair perfectly complements his 'female mask'.
Corey Taylor's mask
Slipknot's Corey Taylor pulling tongues in his Blank Face Mask in July 2009.
Slipknot's evolving masks
Slipknot's Sid Wilson and Shawn 'Clown' Crahan in July 2011.
Shawn 'Clown' Crahan's mask
Slipknot's Shawn 'Clown' Crahan in his Devil Clown Mask in July 2012.
Mick Thomson's mask
Slipknot's Mick Thomson in August 2012.
Jim Root's mask
Slipknot's Jim Root in his Jester Mask in 2013.
Corey Taylor's mask
Slipknot's Corey Taylor at Download Festival 2013.
Chris Fehn's mask
Former percussionist, Chris Fehn, in 2013 in his trademark Liar Mask.
Shawn ‘Clown’ Crahan's mask
Slipknot's Shawn 'Clown' Crahan in January 2014.
Slipknot’s Mick Thomson
Slipknot's Mick Thomson in November 2014.
Slipknot’s Sid Wilson
Slipknot's Sid Wilson in 2015 in his new Gas Mask.
Slipknot's Alessandro Venturella
Slipknot's Alessandro Venturella in 2015.
Slipknot’s Shawn ‘Clown’ Crahan
Slipknot's Shawn 'Clown' Crahan in 2015.
Slipknot’s Corey Taylor
Slipknot's Corey Taylor in 2015.
Slipknot’s Sid Wilson
Slipknot's Sid Wilson in October 2015.
Slipknot’s Jay Weinberg
Slipknot's former drummer, Jay Weinberg, in 2016.
Slipknot’s Corey Taylor
Slipknot's Corey Taylor in 2016.
Slipknot’s Chris Fehn
Slipknot's former member, Chris Fehn, in July 2016
Slipknot’s Jay Weinberg
Former drummer, Jay Weinberg in 2016.
Slipknot’s Shawn ‘Clown’ Crahan
Slipknot's Shawn 'Clown' Crahan in 2016.
Slipknot's Shawn 'Clown' Crahan
Another mask worn by Slipknot's Shawn 'Clown' Crahan in 2016.
Slipknot's new masks for 2019
Slipknot's new masks for 2019
Slipknot unveiled their fearsome new masks for 6th album 'We Are Not Your Kind' on 16th May 2019.
Slipknot's Corey Taylor
Slipknot's Corey Taylor in 2022.
Jim Root in 2023
Slipknot's Jim Root performs on the Pandaemonium stage during Festival Copenhell, in Denmark in 2023.
Slipknot arrive at the 2024 Grammy Awards
Slipknot arrived at the 2024 Grammy Awards, wearing a variety of different masks with their dress suits.
Both Slipknot and Trivium play Download Festival next month appearing on a bill that also boasts Def Leppard, Tool, Slash ft. Myles Kennedy & The Conspirators, Smashing Pumpkins, Halestorm, Rob Zombie, Simple Creatures and many, many more.
