42 years. That’s how long heavy metal band Metallica has been running in a music industry notorious for its unpredictability. Since its inception in 1981, Metallica has seen more than its fair share of highs and lows. From performing to a reported 1.6 million fans in Russia, to frontman James Hetfield’s struggle with substance abuse, not many can say they’ve been together for almost half a century. Yet here they are, currently in the midst of their “M72 World Tour,” which extends into 2026. A musical career filled with milestones, Metallica celebrated one particular achievement by releasing a special tribute album, featuring a list of equally talented musicians from around the globe.