It's been a solid week for creative humans playing Metallica songs: first, this guy performed For Whom The Bell Tolls on actual church bells, and now an amazing video of over 250 musicians covering Sad But True has emerged.

As part of a rock flash mob in Moscow, Russia, this talented bunch who go by the name of RocknMob performed ’Tallica's epic Black Album single in perfect unison, delivering a stunning version of the metal classic.

RocknMob have previously covered the likes of Linkin Park, Green Day, Thirty Seconds To Mars, Bon Jovi and more – so once you're done watching Sad But True below, be sure to check out what else they've attempted here.

Just epic.

In other Metallica news, guitarist Kirk Hammett recently revealed that he's been working on "a ton of material" for the metal titans' next album.

Speaking to Mixdown, Kirk says that he's "ready to go" with the follow-up to 2016's Hardwired… To Self-Destruct.

“When I was 13 or 14 years old, bands put out albums every year. Seriously, KISS put out an album every eight months – none of this eight years between albums.

“None of us are very comfortable with the fact it’s been so long, because that’s a long time. We’re hoping to avoid that this time around.

“We’re in our third year since since Hardwired… To Self-Destruct," Kirk continued. "Maybe we can get a bit more focus and go into the studio a bit sooner.

“I have a ton of material. I’ve over-compensated, so I’m ready to go anytime.”

Metallica's European stadium tour starts on May 1 in Lisbon, Portugal.

They will headline Manchester’s Etihad Stadium on June 18 and London’s Twickenham Stadium on June 20. Get your Manchester tickets or your London tickets now.