Watch Dave Grohl and Kristen Bell Unleash 'Frozen'/Metallica Mashup on 'Kimmel' | Revolver

Watch Dave Grohl and Kristen Bell Unleash 'Frozen'/Metallica Mashup on 'Kimmel'

"Tuck you in, warm within/Keep you free from sin/Till the Snowman he comes"

Dave Grohl hosted last night's episode of Jimmy Kimmel Live, filling in for the show's titular host, who's out this week. Since it was Halloween, the Foo Fighter carried out his late-night duties while dressed in an eerily realistic David Letterman get-up, beard and all.

After performing a spooky monologue and presenting Kimmel's annual "I told my kids I ate their Halloween candy" prank, Grohl teamed up with Kristen Bell of Frozen fame to perform a spirited mash-up of "Do You Want to Build A Snowman" and Metallica's "Enter Sandman," backed by the 'Kimmel' house band. Bell changed the "Black Album" staple's lyrics ever-so-slightly to fit the theme: "Tuck you in, warm within/Keep you free from sin/Till the Snowman he comes," she belted, as Grohl hammering away at the drum kit. James Hetfield, eat your heart out. 

Below, see Metallica's Kirk Hammett launch his horror-movie art exhibit in Salem and visit the Salem Witch Museum: