X Factor 2012 hopeful Ella Henderson has teased her song choice will shock viewers tomorrow night.
The teenager will be taking on another classic track for this weekend's Best of British theme.
Speaking at the Kardashian party in London last night, Ella said: “It’s a big week and I am doing a song that will shock people because although people will know the song, I am singing a totally different version of it.”
Last weekend saw Ella take on Katy Perry's Firework, with the 16-year-old admitting it had been her favourite performance so far.
Now mentor Tulisa is hoping to continue the momentum with an "amazing" song choice.
"She [Ella] is very exited," the N-Dubz singer said.
Tulisa revealed: "We have got an amazing song choice this week and I cant wait for her to smash it again."
The X Factor continues with its live shows this weekend with a Best Of British theme.
Sunday's results show will feature performances from One Direction and Little Mix, as well as one more act being given the boot.