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 until Kill ’Em All eventually stuck. And if their debut set the scene for the burgeoning thrash metal genre, their next three albums defined it until 1991, when their self-titled ‘Black Album’ sent the band to the stratosphere, hitting number 1 worldwide.
Like most guitar bands who reach their fifth
