James Hetfield and Kirk Hammett have been kicking heavy metal ass for 40 years. In 1983, it was the band’s mission statement, with their debut album originally planned to be titled Metal Up Your Ass ...

Since the early ’80s, this has been Metallica’s rallying cry, and truly, no introduction is needed for a band whose severe guitarwork, melodic interludes, prolific lyrics and thrash pacing have made ...