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Miley Cyrus Totally Shocked Bill Murray While Filming Their Christmas Special

The legend reveals why Miley "murdered" it.

With reporting by Josh Horowitz

When Kris Kringle comes to town next December, he'll have some serious competition in the form of Bill Murray's "A Very Murray Christmas" special on Netflix. The special, which was written by Sofia Coppola, Murray and Mitch Glazer and directed by Coppola, features Murray worrying that no one will show up to his New York City television show due to a snowstorm -- but lucky for him, many celebs, including Miley Cyrus, totally showed up.

Murray and Glazer stopped by MTV News HQ and San Diego Comic-Con on Thursday (July 9), where Murray revealed that not only is Miley the freaking best (duh), she also is singing two songs in the special -- "Let It Snow" and "Silent Night" -- for a very specific reason.

"I didn't know what to expect with her," Murray explained. "She's a hoot. She's a lot of fun, but she's a real pro -- what a trooper she was. Someone who may remain nameless didn't show, so we had to sort of scramble a little bit. People say things, [like], 'Miley Cyrus, she can't sing... it's all auto-tune.' There's no auto-tune. There's no auto-tune going on at all. I was like, 'that's no auto-tune, that's crazy.' She has real power on the top. She's got big box. She's got a big box; she really has a lot of power."

This [vocal] box impressed Murray and "Saturday Night Live" band leader Paul Shaffer so much, that they decided to bring her around for round two.

"[I thought] maybe she'd sing another song, because this other idiot didn't show up," Murray continued.

The song the "other idiot" was supposed to sing was a big one -- "Silent Night." But when Murray asked Miley if she could take it on, she had to admit that she somehow didn't know it.

"I could have kissed her," Murray continued. "I was like, 'You don't know 'Silent Night?' I want to know more about you.' She learned it... she learned it in an hour, and killed it. Murdered it in an hour... she really was something."

... Hey, when it's so impressive that Bill Freaking Murray is talking about it at Comic-Con months later, you know it's going to be worth your while.