The album’s soul was forged when Kirk Hammett wrote a simple, swaying guitar riff at 3:00 AM. Lars Ulrich suggested he repeat the first part three times before the "swing." That riff became the song that would transform Metallica from underground titans into household names. 3. Personal Evolution
Released on August 12, 1991, the album featured a stark, nearly all-black cover with only a faint coiled snake and the band’s logo. It was a statement of pure confidence. The "Black Album" didn't just top the charts; it stayed there for decades, eventually being certified 16x Platinum.
After the complex, progressive "math-metal" of ...And Justice for All , the band felt they had pushed thrash to its limit. They weren't looking to get softer; they were looking to get heavier by getting simpler. 1. The Arrival of "The Bob"