The X Factor 2016 contestants will face a Hunger Games style twist in Sunday night's bumper bootcamp special.
Tomorrow evening will see all the successful auditionees are through their paces, having to perform once again for the judges in groups of three.
The acts are faced with a 'wall of songs', an assortment of 50 song choices written on pieces of paper and attached to a wall.
The songs range from classic hits - such as Stevie Wonder's Superstition and Ain't No Mountain High Enough - to more recent chart toppers, including as Lukas Graham's 7 Years and Justin
Timberlake's Can't Stop The Feeling.
More bootcamp song choices are R Kelly's Ignition, Taylor Swift's Style, Jessie J's Flashlight and the Black Street Boys' I Want It That Way.
The singers will have to race to the wall and fight it out for the song they want but that's not quite the full story.
Each song choice appears three times and the acts that pick the same song will be put together as a group to perform for the judges.
Sharon Osbourne warns beforehand: "The one thing that is so critical is your song choice. It can make or break you."
Meanwhile, Simon Cowell advises: "When you're working with whoever you're working with, work as a team but also understand that they are your competition as well."
Louis Walsh adds: "This is serious now because we're going to be sending a lot of you home tomorrow."
It's then a race for the wall and chaos ensues.
Dermot O'Leary narrates as he watches the drama unfold from the sidelines: "We've got people who want to swap their songs, it looks like there's a black market trade going on... it is absolutely mayhem.
"People who can't find anyone else to sing with, people who are over the moon, some are not so happy. An awful lot of people who didn't know the songs."
The X Factor 2016's bootcamp airs Sunday night from 7:30PM on ITV.