Taylor Swift‘s new music video “Safe & Sound” for The Hunger Games with The Civil Wars was just released, but Taylor admits that when she was first asked to write a song for the film she didn’t know what to expect.

“When I got the call, I thought from what I’d heard about the movie, ‘It’s an action movie, right? We’re probably going to be writing a song that’s like, “We’re going to win!’” she shared on MTV First: Taylor Swift.  “And then I read the book, and I thought, ‘No, we’re going to have to write sort of a death lullaby, it’s so different from what I thought.'”

Swift says the video was “eerie” to make at times because it brought up thoughts of life and death, especially since a lot of the music video was shot in a cemetery.

“It’s one of my favorite moments in the video; there’s this wide shot, where I’m just kind of crumpled up sitting on a gravestone, and it’s actually the gravesite of a couple who lived and died in 1853,” she told MTV. “I’m sitting here thinking, ‘What were their lives like?’ It’s really eerie, considering what the movie is about and how it deals with life and death. It just absolutely blew my mind.”

The video was a very different experience for Swift because not only was she trying to keep the message of The Hunger Games, but it was also really cold out!

“It was so cold. It was freezing. I was shaking the whole time and trying not to be shaking when the cameras were rolling. It was about 40 degrees in Nashville. It had just rained,” she said. “I’m wearing this 1920s vintage nightgown that didn’t provide much warmth. I didn’t get sick. I thought I was going to get sick. That was the upside.”