The frontman of the heavy metal band - who last played Donington Park in 2013 - was really emotional as he took to the main stage at the Download Festival on Friday night (12.06.15).
Speaking to Download.co.uk, Corey said: ''Download is like home for me and it has been for the past 10 years now. Coming back you have to look at what you've done before and go we are not going to even out. Let's see how far we can go and reach the peaks in the valleys.
''It feels like this band is on the same level as each other for the first time again. We're all on the same page again, we are all talking again.''
In the two years since they last performed at the festival, drummer and co-founder Joey Jordison was fired from the group because they ''just weren't able to work anymore'' and five years ago, the band had suffered a massive loss when bassist Paul Gray passed away.
Their set included some of their classics - 'Before I Forget', 'Duality' and 'Wait and Bleed' - and behind his mask, Corey appeared overwhelmed to be sharing the stage with his band members - who include bass player Alessandro Venturella and drummer Jay Weinburg - once again.
He added: ''We're are honoured, we're happy and ecstatic to be a part of the history of Download.''
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