Last night, the lead Foo Fighter himself, Dave Grohl, took over hosting duties of ABC's Jimmy Kimmel Live. Dressed as a convincing, bearded David Letterman, Grohl welcomed such guests as Kristen Bell. In fact, the two ended up collaborating and a musical number that combined the beautiful "Do You Want to Build a Snowman?" from Frozen with the iconic Metallica hit "Enter Sandman." That might sound odd, but it'll make a lot more sense once you watch the clip for yourself:

By the way, in case you were wondering, Bell is dressed up as Magnum PI — not a Rescue Ranger (although that show's costume design was inspired by the show). But anyway, what did you think of "Enter Snowman"? Hey, maybe this version could make an appearance in Frozen 2! (Just kidding.)