Slipknot recently performed at Sonisphere Festival in Greece, an emotional comeback after the hiatus the band took following bassist Paul Gray's death. The band performed in red jumpsuits and their vintage masks.

According to rocknewsdesk.com, "frontman Corey Taylor told the crowd: “Tonight is a very emotional show for us. But it is not a negative day – it’s a positive day, a day for celebration. WIll you celebrate with us today?”

Later he added: “This is very hard for us, but he would have wanted us to come out with you all and celebrate his life.”

He invited the audience to join in with classic track Duality, saying: “Will you all help me sing a song for my brother? Sing so loud he can hear us – because he is here with us tonight. Can you feel it?”

The 25,000 capacity audience supported the band all the way through their 14-song set, with former member Donnie Steel playing Gray’s bass parts from offstage."

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