Watch Metallica Play 'Enter Sandman' on Toy Instruments With Jimmy Fallon & the Roots

Metallica are some of the hardest rockers ever. But as they are getting ready to release their 10th album, Hardwired... To Self-Destruct (along with putting a video out for each song), they need a break from all that clamor. 

That's why they visited The Tonight Show with Jimmy Fallon. Taking to tiny toys, Metallica and The Roots busted out a more elementary version of their 1991 classic "Enter Sandman."