“It really doesn't have much to do with us. We gave this guy a couple of riffs and told him to run with it”: The WTF hip hop collaboration that Metallica don’t talk about any more

Metallica in 2001 and rapper Ja Rule.

Say what you will about Metallica, but no other metal band has taken as many chances as they have over the last 40-plus years.

From helping to forge an entirely new sound with their landmark debut Kill ’Em All to changing things up on an enormous scale with 1991’s mega-successful Black Album to teaming up with an orchestra on 1999’s groundbreaking S&M album, challenging themselves is embedded deep in Metallica’s DNA.