The X Factor 2015: Jukebox & Judges' Choice theme, Rita Ora to perform and what the acts will sing

This week's theme on The X Factor live shows is 'Jukebox & Judge's Choice' which left each act completely unable to pick their own tracks. As the competition heats up, with just five acts left, the contestants are charged with singing two songs each in tonight's episode - one chosen by the general public via Twitter in the run-up to their performances and one selected by their own mentors.

Judge Simon Cowell was left with no contestants last week, when Anton Stephans was voted out on Sunday night's show, but he wasn't the only one who left. In a shock reveal, Nick Grimshaw's Mason Noise also exited the competition on Saturday, in a secret elimination.

This weekend, only one act will be eliminated, but then they said that last week, so that doesn't mean the acts can relax when it comes to their performances. Here's what you can expect from each of the remaining finalists ...

The Boys - Judge: Nick Grimshaw

Grimshaw's sole remaining act Ché Chesterman will perform Hello by Adele, chosen by the public on Twitter. It will surely be a challenging song given its success at the moment and he will also tackle Otis Redding's Try A Little Tenderness which was selected by his mentor.

The Girls - Judge: Rita Ora

The public chose Firestone by Kygo and Conrad Sewell for Lauren Murray to sing tonight, whilst judge Rita Ora selected You Don't Own Me by Grace featuring G-Eazy. Louisa Johnson will take on Twitter choice Love Yourself by Justin Bieber but she will also be performing Labrinth's Jealous which Ora picked especially for her.

The Groups - Judge: Cheryl Fernandez-Versini

Fernandez-Versini's self-confessed favourites, Reggie 'N' Bollie, will be taking on Watch Me (Whip/Nae Nae) by Silentó, as well as Taio Cruz's Dynamite chosen by their mentor.

Filipino girlband 4th Impact will be performing Jackson 5's I'll Be There after the public chose it for them via Twitter. They will also sing Fancy Rich Girl by Gwen Stefani & Eve VS Iggy Azalea & Charli XCX, which was selected by Fernandez-Versini.

According to William Hill, Louisa Johnson is still favourite to win with odds 4/9, but Reggie 'N' Bollie have jumped to second place with 6/1. Ché Chesterman is 7/1, with Lauren Murray and 4th Impact next in line.

Tune into The X Factor on ITV from 8pm to 9.45pm on 28 November to see the five acts perform their individual songs. The results show is on from 8pm to 9pm on 29 November, with judge Rita Ora performing her song Coming Home with drum and bass duo Sigma. American country singer Carrie Underwood will also be singing her latest track, Heartbeat.

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