The Machine Gun Kelly-Corey Taylor saga continues as the Slipknot frontman has now fired back at MGK on social media with a couple of screenshots of an email exchange.

On September 20, the news went viral that MGK dissed Slipknot while onstage, saying that he was happy to not be a 50-year-old wearing a mask. Just a couple of hours later, Kelly followed up with his comments in a tweet, saying that Taylor did a verse for his album “Tickets to My Downfall” and said that it was terrible.

However, Taylor has just responded in a tweet of his own. “I don’t like people airing private shit like a child. So this is all I’ll say: I didn’t do the track because I don’t like when people try to ‘write’ for me. I said no to them. So without further ado…. #receipts. This is all I’m going to say about it,” the Slipknot vocalist said.

Also read: Machine Gun Kelly age-shames Slipknot, calls them ‘old, weird dudes with masks’

Meanwhile, the “receipts” that Slipknot mentioned were of two screenshots of emails. The first was a message that he received from Blink-182’s Travis Barker, who worked on Tickets to My Downfall with Kelly. Barker claimed that he and Kelly loved what Taylor apparently sent them, and pasted a couple of notes from MGK underneath.

MGK, in the email, said that he loved Taylor’s vocal parts and that he’s “stoked” and “honored” that he was going to be featured on the track. He then mentioned that he added a bridge and a second half to Taylor’s verse, in hopes that Taylor would also record that in the vocal style that he used on Slipknot’s “Psychosocial.”

The second image was Taylor’s reply to Barker’s email, in which he said, “So I listened to the ideas and to be honest, I don’t think I’m the right guy for the track. Nothing personal, I just think if this is what MGK is looking for, someone else is the guy to do it. It’s all good and I’m stoked for him — I hope you guys find the right fit for it. Hope you understand and I wish you guys the best with it. If I can help in any way, let me know.”

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Similarly, the tension between Metallica and their former guitarist Dave Mustaine lasted nearly three decades, before it’s apparent conclusion as the musicians shared the stage during a Big 4 show in 2010 to perform Diamond Head‘s “Am I Evil?”

In 1983, Mustaine was kicked out of Metallica for alcohol and drug abuse, which led Mustaine to form Megadeth shortly after. Later, in 2004, the feud was put under a microscope in Metallica documentary, ‘Some Kind of Monster,’ with a sorrowful confrontation between Mustaine and Metallica drummer Lars Ulrich.

The two traded verbal blows throughout the rest of the decade, as Ulrich referred to Mustaine’s inability to move on as “mind-blowing”.