The tension between Metallica and their former member / Megadeth frontman Dave Mustaine lasted nearly three decades, before its apparent conclusion as the musicians shared the stage in 2010 to perform Diamond Head's 'Am I Evil?'

Mustaine was kicked out of Metallica in 1983 for alcohol and drug abuse, which led Mustaine to form Megadeth shortly after. The feud was put under a microscope in the 2004 Metallica documentary, 'Some Kind of Monster,' with a sorrowful confrontation between Mustaine and Metallica drummer Lars Ulrich. The two traded blows throughout the rest of the decade, as Ulrich referred to Mustaine's inability to move on as "mind-blowing."

 

 

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