It's here, Swifties. "Out of the Woods," the second song off Taylor Swift's upcoming album "1989" was unlocked today on iTunes.

"Out of the Woods" is, of course, about a breakup, many are assuming with Harry Styles of One Direction. Swift told Yahoo TV that the line, "Remember when you hit the brakes too soon/Twenty stitches in a hospital room," refers to her hospital visit with "an ex." Swift explained how she kept it out of the news.

"You know what I've found works even better than an NDA (non-disclosure agreement)?" she said. "Looking someone in the eye and saying, 'Please don't tell anyone about this.'"

Jack Antonoff of the band Fun. produced and co-wrote the track with Swift. He told Rolling Stone in September, "The thing I love about that is parts of it reads like a diary, and parts of it read like something 100,000 people should be screaming all together. It's got these very big lines that everybody can relate to, which are given weight by her being really honest about personal things."

Swift released a video on her YouTube channel talking about the new single.

"One of the goals I set out to accomplish when I wanted to make this album is I wanted to make sure that these songs sounded exactly the way that the emotions felt when I felt them," Swift said in her video. "This song is about the fragility and kind of breakable nature of some relationships. This was a relationship where it was kind of living day-to-day, wondering where it was going, if it was gonna go anywhere, if it was gonna end the next day. It was a relationship where you never feel like you're standing on solid ground."

Watch the country diva turned pop princess talking about her new single here: