Bad Blood is a song from her fifth studio album, 1989 (2014). The single version, featuring American rapper Kendrick Lamar, was released on May 17, 2015 by Republic Records. The song reached number one on the Billboard Hot 100 and is the third song from the album to do so.
Swift wrote “Bad Blood” about an undisclosed female musical artist. Swift says the artist attempted to sabotage one of her concert tours by hiring people who worked for her. Publications such as Billboard, Rolling Stone, Time, and The Washington Post have speculated that Katy Perry is the subject of the song
The music video was directed by Joseph Kahn. The video was filmed in Los Angeles, California on April 12, 2015, but the setting for the video is the City of London. The music video premiered on May 17, 2015, at the start of the Billboard Music Awards. Each actor chose their character’s name. Swift began teasing the video in May on Instagram by posting photos of each character. The video broke Vevo’s 24-hour viewing record by accumulating 20.1 million views in its first day of release
The music video starts with Catastrophe (Swift) and Arsyn (Selena Gomez) fighting off a group of men wearing suits in an office somewhere in London. When all of the men are defeated, Arsyn decides to betray Catastrophe by kicking her out of a window. The song begins with Catastrophe laying on a broken car, as Welvin da Great (Kendrick Lamar) begins to rap his verse. Catastrophe is shown being nursed back to health by The Trinity (Hailee Steinfeld), and after some time, she is ready to start training for her revenge. She is shown training in different scenarios with all of the other characters in the video, including knife-fighting with Cut-Throat (Zendaya), boxing with Knockout (Karlie Kloss), riding motorcycles with Domino (Jessica Alba), and others such as The Crimson Curse (Hayley Williams), Destructa X (Ellie Goulding), Frostbyte (Lily Aldridge), Slay-Z (Gigi Hadid), Lucky Fiori (Lena Dunham), Dilemma (Serayah), Luna (Ellen Pompeo), Justice (Mariska Hargitay), Mother Chucker (Cara Delevingne), Homeslice (Martha Hunt), and Headmistress (Cindy Crawford). When her training is complete, Catastrophe and her friends exact their revenge on Arsyn and her henchmen. The two teams approach each other while an enormous explosion goes off in the background, blotting out the London skyline, including 30 St Mary Axe, and the video ends with both of the women simultaneously striking each other in the face