Here are the final song choices from tonight's X Factor judges' houses with the Overs.
It's the third and last episode of the penultimate stage of the competition tonight.
So far we've seen Simon Cowell and his Girls, Robbie Williams and the Groups and Louis Tomlinson with his Boys.
Tonight its the turn of Ayda Williams who takes the Overs out to LA to pick her final four acts.
As always, there are some special guest judges: Ayda is joined by multi-platinum selling artist and X Factor winner Leona Lewis and Grammy Award nominee Adam Lambert, who rose to fame on American Idol in 2009.
Leona said: "I love the overs because they have so much to give. They have a lot riding on getting through and that really comes across in their performances. You just feel the gravity of how much they want it."
Here are the songs the final six are singing...
X Factor song choices
Percy Sledge – When a Man Loves a Woman
Kelly Clarkson – Piece by Piece
Kings of Leon – Use Somebody
Eva Cassidy - Somewhere Over the Rainbow
After everyone has performed, Ayda will reveal her decision as she picks four finalists and sends two others home.
We'll find out which other contestants have made it into the live shows alongside Robbie's groups and Simon Cowell's girls, who were revealed previously.
Robbie chose 15-strong LMA Choir, teenage duo A Star, pals Stefan and Jeff aka Misunderstood and boyband Vibe 5.
Meanwhile, Simon picked 19-year-old Bella Penfold from Essex, 16-year-old Molly Scott from County Durham, 20-year-old Scarlett Lee from Surrey and 25-year-old Shan from Croydon as his finalists.
The X Factor 2018 airs Sunday night at 8PM.
The X Factor 2018 live shows begin at 8:25PM on Saturday, October 20 and at 8PM on Sunday, October 21.