Lyric discussion by musicrocks13 

Swift previewed this upbeat track on the October 8, 2012 episode of ABC's Good Morning America. The Country-Pop songstress penned the tune with the Swedish hitmaking duo of Shellback and Max Martin, the same pair that she collaborated with on her hit single "We Are Never Ever Getting Back Together."

Taylor explained the backstory to the tune before playing it to Good Morning America viewers. "It's a song that is one of my favorites on the album, because it sounds just as chaotic as the feeling was when I wrote it," she said. "It's a song about being frustrated with yourself because here you are heartbroken and you knew when you first saw this person, you saw all these red flags and you went for it anyway. So, shame on me."

Max Martin is one of several songsmiths that Swift reached out to write with her on Red. "I have always been so fascinated by how Max Martin can just land a chorus, "she told Billboard magazine. "He comes at you and hits you and it's a chorus - all caps, with exclamation points."

The song features some dubstep elements but Swift admitted to Spin magazine that she was unaware that she was dipping her toe in the EDM genre when she recorded this tune. "I've written some with Ed Sheeran, and he's become a good friend of mine, and he always plays me really interesting stuff from the U.K. whenever he comes over and hangs out," she explained. "But I never really thought, 'Hey, I want to download some dubstep music!' " "What ended up happening was, I wrote this melody for this chorus on the piano [for "Trouble"], and I brought it to Max Martin and Shellback, and I said, 'At the end of the chorus, I just want this to go crazy. I want it to be really chaotic.' I want the bass line to do this, like [makes loud GUH GUH GUH sound]."

Swift went on to explain that it was the Swedish producers who put a name – dubstep – to her description. "I don't really know what to call it, but I just kind of sing it how I want it to sound," she explained. And they're like, 'Oh, sort of like a dubstep thing.' And I'm like, 'I guess, I don't know? Whatever that is, whatever that ridiculous sound that I made with my mouth when I was trying to figure out what to say,' " she recalled. "You end up doing a lot of that when you're recording and writing, being like, 'It kinda sounds like this!' [Does a laser-y SCHOOM sound]. I wanted the song to sound as chaotic as the emotion felt. I wanted it to be loud and out of control."

The song was Swift's 50th Billboard Hot 100 entry. The singer reached the landmark sum just six years and one month after the arrival of her debut entry, "Tim McGraw," the week of Sept. 23, 2006. In doing so, Swift overtook Aretha Franklin to become the fastest female performer to her 50th Hot 100 hit.

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