Emily Middlemas has been kicked out in the X Factor semi-finals - leaving 5 After Midnight, Saara Aalto and Matt Terry through to next week's finals.
5 After Midnight and Saara Aalto were sent straight through in the public vote, leaving Matt and Emily in the sing-off - a shock for audiences as neither had ever been in the bottom two.
Matt sang Christina Aguilera's Hurt, while Emily took on Birdy's Wings.
Simon Cowell and Nicole Scherzinger each backed their own acts - Emily and Matt respectively - while Louis and Sharon both chose Matt.
Despite reports the show is losing viewers to Sir David Attenborough's BBC show Planet Earth II, host Dermot O'Leary revealed they had received the highest number of votes of the season - in the region of two million.
Kicking off the show, the contestants sang Do They Know It's Christmas.
Head judge Simon Cowell took the opportunity to thank everybody who has worked on the show atFountain Studios, which are set to be knocked down after this year's semi-finals.
The show also featured a performances by Zara Larsson, who sang her new single I Would Like before launching into her summer hit Lush Life, and Lady Gaga, who performed Million Reasons.
During Saturday's semi-final show, each of the wannabe winners performed two songs - one, a Christmas tune, and another of their own choice.
Matt was first on-stage with traditional hymn Silent Night, followed by Say You Love Me by Jessie Ware.
Boyband 5 After Midnight took on East 17's Stay Another Day, followed by Stevie Wonder's Signed, Sealed, Delivered (I'm Yours).
Their performances won them strong praise from the judges, after being in the sing-off the week before.
Emily Middlemas performed John Lennon classic War is Over as her Christmas song, choosing Tears for Fears' 1982 song Mad World.
Mentor Simon Cowell praised both performances, but she faced criticism of her Lennon cover from Louis and Nicole, who told her she did the "same thing" every week.
Saara Aalto sang a medley, starting with Bing Crosby classic White Christmas before launching into Mariah Carey's All I Want for Christmas is You, earning her a standing ovation from the four judges.
Sia's Chandelier was her second song.