Songfacts®:

• "Break Up Song" is a defiant synth-pop anthem about getting over a relationship. The Little Mix girls celebrate their independence from their deadbeat exes during a night out alone.
  
  I'll be good all by myself
  Yeah, I'll find a way to dance without you
  In the middle of the crowd
  I'll forget all of the pain inside
  
  The girls are intent on leaving their heartbreak in the dust.
• "Break Up Song" is Little Mix's lead single from their first album released by RCA UK and Columbia after leaving Syco. Some of the song's lyrics may be the girls throwing shade at their old label, as well as addressing their exes.
  
  So tonight, I'll sing another, another break-up song
  So turn it up, let it play on and on and on and on
  For all of the times they screwed us over
  
  Little Mix has alleged that Syco took away a lot of opportunities from them.
• Little Mix's Perrie Edwards, Leigh-Anne Pinnock and Jade Thirlwall wrote the empowering song with their frequent collaborator Camille Purcell and the Goldfingers production duo. Purcell and Goldfingers also penned the quartet's single "Think About Us."
• Edwards told the BBC this was one of six or seven songs they penned during a profitable day in the studio with Purcell. "It was very basic at the time," she said. "The beat was all over the place and it was really, really rough - but it just had something about it."
  
  When the girls played the rough demo to RCA, telling them they believed it should be the lead single, the label was unsure as it was so incomplete. However, once they put together a proper demo, everybody came on board.
• Wondering why Jesy Nelson is the only Little Mix band member without a writing credit on the song? Turns out she was ill on the day it was penned. "That was one of the days we were with Kamille, who's our favorite writer, and I wasn't well, so I was gutted I didn't write on it," she explained to The Sun. "But they did so well with it."
• The song's music video is a combination of animation and footage shot by the four girls while self-isolating during the COVID-19 pandemic. Little Mix were due to shoot the clip just before the lockdown, which forced them to be creative.