"I Knew You Were Trouble" is a song by the American singer-songwriter Taylor Swift from her fourth studio album, Red (2012). She wrote it with its producers, Max Martin and Shellback. A dubstep and pop track, "I Knew You Were Trouble" has a production based around electric guitars and synthesizers, accentuated its refrain with a wobble bass and Swift's distorted vocals; critics found the dubstep production a radical departure from Swift's previous country pop sounds. In the lyrics, the narrator blames herself for not recognizing the warning signs of a past toxic relationship.
Big Machine, in partnership with Republic Records, released "I Knew You Were Trouble" to US pop radio on November 27, 2012, as the second pop single and the third overall from Red. The song peaked within the top 10 on record charts and received multi-platinum certifications in Australia, Austria, Canada, New Zealand, and the UK. In the US, the single peaked at number two on the Billboard Hot 100 and spent seven weeks at number one on the Pop Songs chart. Its success on pop radio inspired Swift to recalibrate her artistic identity from country to pop on her 2014 album 1989. Initial reviews were divided: positive comments found the production bold, but criticisms deemed it derivative. Retrospective opinions have regarded "I Knew You Were Trouble" as one of Swift's career-defining singles.
The music video for "I Knew You Were Trouble" premiered on MTV on December 13, 2012. Directed by Anthony Mandler, it depicts Swift with an unfaithful man and ending up alone in a desert. The video won Best Female Video at the 2013 MTV Video Music Awards and the Phenomenon Award at the 2013 YouTube Music Awards. Swift performed "I Knew You Were Trouble" at awards shows including the American Music Awards, the ARIA Music Awards, and the Brit Awards. She included it on the set lists of the Red Tour (2013–2014), the 1989 World Tour (2015), and the Eras Tour (2023–2024). After a 2019 dispute regarding the ownership of her back catalog, Swift re-recorded the song as "I Knew You Were Trouble (Taylor's Version)" for her second re-recorded album, Red (Taylor's Version) (2021).
Background and production On her fourth studio album, Red (2012), Taylor Swift aimed to experiment with musical styles other than the country pop sound that had defined her artistry at the time. She thus approached producers located outside of her career base in Nashville, Tennessee. Among them was the Swedish producer Max Martin, whose production inspired Swift by "how [it] can just land a chorus". The two as well as the Swedish producer Shellback met in Los Angeles and wrote three songs on Red, including "I Knew You Were Trouble".
Swift developed the song's melody on piano, initially conceiving it as a "really sad piano ballad". She asked Martin and Shellback to help with the production, and they suggested to have elements of dubstep music on it. Although Swift had been familiarized with dubstep through the music that the English singer-songwriter Ed Sheeran introduced to her, she was not aiming to embark on specific trends and instead wanted the sound to convey the chaotic emotions of the lyrics. Deeming it the boldest musical direction of the album, Swift thought that the audience would be "freaked out over" it when they listened to it.
"I Knew You Were Trouble" was recorded by Sam Holland at Conway Recording Studios in Los Angeles and by Michael Ilbert at MXM Studios in Stockholm, Sweden; Eric Eylands provided recording assistance. The track was mixed by Şerban Ghenea at MixStar Studios in Virginia Beach, Virginia, and mastered by Tom Coyne at Sterling Sound Studio in New York City. Martin and Shellback both produced "I Knew You Were Trouble" and played keyboards in it; the latter also programmed the song and played acoustic guitar, electric guitar, and bass guitar.
Composition
"I Knew You Were Trouble" is about being involved with someone who is irresistible but flawed: the narrator blames herself for falling in love with him upon recognizing the warning signs in hindsight. Using the verse–chorus form with an added post-chorus, the track begins with a syncopated guitar chord and progresses with a kick drum that drives its rhythm, and then a bass drum that accentuates the beat. During the first pre-chorus, Swift sings, "I knew you were trouble when you walked in", only backed by piano chords and subdued guitar strums. In the second pre-chorus progresses, the drums accelerate and Swift's vocals are double-tracked. The song then transitions into the refrain, accompanied by a drop characterized by a dubstep wobble, synthesizers, and Swift's distorted vocals. The instrumental halts again at the bridge, where Swift contemplates on her past relationship: "You never loved me, or her, or anyone, or anything." Critics described the song's genre as dubstep, dance-pop, pop rock, electropop, and teen pop, with influences of dancehall on the melody and R&B on the vocal processing.
Critics considered the dubstep experimentation on "I Knew You Were Trouble" a significant departure from Swift's country pop beginnings. While describing how the song's style felt "sudden" and "unexpected" when compared to other tracks on Red, the musicologist James Perone believed that it was "logical" for first-time listeners to react in surprise upon hearing "I Knew You Were Trouble" if they were familiar with Swift's work prior to its release. Jon Caramanica of The New York Times commented that the dubstep wobble was a "wrecking ball" that shifted the dynamic of not only "the song but also of Ms. Swift's career". Randall Roberts from the Los Angeles Times remarked that although dubstep had been popularized by DJs such as Zedd and Skrillex, "I Knew You Were Trouble" introduced the genre to a wider audience of mainstream pop, which had been "sonically conservative for the past half-decade". In Pitchfork, Brad Nelson commented that the production was "sharp as [Swift's] lyrics".
Critical reception The dubstep experimentation divided contemporary critics. James Reed from The Boston Globe wrote that "I Knew You Were Trouble" and the other tracks produced by Martin and Shellback were unoriginal. Amanda Dobbins from Vulture felt the dubstep sound was not innovative, but praised the song as "yet another plucky, vowel-laden Taylor Swift breakup jam". In a Red album review for The Washington Post, Allison Stewart criticized the production as "gratuitous and weird" which overshadowed Swift's lyrics. In defense of Swift, Randall Roberts from the Los Angeles Times said it was "unfair to criticize a 22-year-old for adapting with the times". Though Roberts acknowledged that critics could dismiss the refrain's bass drop as conceit, it was justifiable for Swift—whom he considered a leading pop star—to experiment with mainstream trends.
In positive reviews, Jon Caramanica from The New York Times and Chris Willman from The Hollywood Reporter praised the song for exhibiting Swift's versatility beyond country. Slant Magazine Jonathan Keefe praised "I Knew You Were Trouble" as one of Red best tracks because "the production is creative and contemporary in ways that are in service to Swift's songwriting". In a review for Spin, Mark Hogan praised Swift's songcraft and remarked that although the dubstep experimentation initially came off as unoriginal, it "ultimately gets absorbed into [Swift's] own aesthetic".
"I Knew You Were Trouble" featured on 2012 year-end lists by Spin (34th) and The Village Voice Pazz & Jop critics' poll (59th). Retrospective reviews of "I Knew You Were Trouble" have been generally positive. Hannah Mylrea from NME and Alexis Petridis from The Guardian considered the single a bold artistic statement for Swift, ranking it among the best songs of her catalog. In a 2021 retrospective review, Laura Snapes from The Guardian commented that the song was "the rare pop-EDM crossover" that stood the test of time.
Release and commercial performance Before Red release, Swift premiered a snippet of "I Knew You Were Trouble" on Good Morning America on October 8, 2012. The following day, Big Machine Records released the song onto the iTunes Store for digital download. "I Knew You Were Trouble" was released to US pop radio on November 27, 2012, by Big Machine in partnership with Republic Records; it was the second pop radio single from Red, following "We Are Never Ever Getting Back Together". A limited CD single edition of the track featuring fan-exclusive merchandise was available through Swift's official website on December 13, 2012. The song was released as a single in the UK on December 9, 2012, and in Italy on January 11, 2013.
On November 3, 2014, Big Machine removed Swift's discography from the streaming platform Spotify. The decision was made by Swift, who argued that Spotify's ad-supported free service undermined their premium service, which provides higher royalties for songwriters. In December 2015, media outlets reported that "I Knew You Were Trouble" had been re-delivered to Spotify, but its credit was mistakenly given to the Welsh band Lostprophets and their lead singer Ian Watkins. The song was removed from the site after three days. Swift re-added her catalog on Spotify in June 2017.
In the US, "I Knew You Were Trouble" debuted at number three on the Billboard Hot 100 and number one on the Digital Songs chart, with 416,000 copies sold during the first week. Together with "We Are Never Ever Getting Back Together", it made Swift the first artist in digital history to have two 400,000 digital sales opening weeks. Buoyed by strong digital sales, "I Knew You Were Trouble" reached its peak at number two on the Hot 100 chart dated January 12, 2013. Despite not being released to country radio, the track debuted and stayed for one week at number 55 on the Country Airplay chart in April 2013, thanks to unsolicited plays by the Los Angeles radio station KKGO. The song was Swift's first number-one entry on Adult Pop Songs, and it spent seven weeks atop Pop Songs. The Recording Industry Association of America (RIAA) certified "I Knew You Were Trouble" seven times platinum in July 2018. By July 2019, it had sold 5.42 million digital copies in the US. The song's success on pop radio influenced Swift to reinvent her artistry from country to pop on her next studio album, 1989 (2014), which was executive-produced by Swift and Martin.
"I Knew You Were Trouble" was a commercial success in the English-speaking countries, peaking at number two in Canada and the UK; number three in Australia and New Zealand; and number four in Ireland. It has been certified eleven-times platinum in Australia, five-times platinum in Canada, four-times platinum in New Zealand, and triple platinum in the UK. In continental Europe, the single peaked at number one in the Czech Republic, number three in Denmark, number five in Russia, number six in Austria, number eight in the Commonwealth of Independent States and Switzerland, number nine in Germany, and number ten in Belgian Flanders and Finland. The song has been certified triple platinum in Poland, double platinum in Austria, and platinum in Denmark, France, Germany, and Switzerland.
Music video
Anthony Mandler directed the music video for "I Knew You Were Trouble". Shot in Los Angeles over two days, the video stars Reeve Carney as Swift's love interest. In the video, Swift wears a pink ombré hairstyle, a ripped tee-shirt, and skinny jeans. Marie Claire wrote that this "edgy" look, which coincided with her much-publicized relationship with English singer Harry Styles, signified that she was outgrowing her "good girl" public image.