But following weeks may not be so simple!
That's because X Factor bosses have introduced a brand new twist this series called the Jukebox Theme Twist which basically means each week's theme will be chosen completely at random.
At the end of every Sunday night's results show, Dermot O'Leary and a special guest will spin the giant jukebox on stage, revealing what the following week's theme will be.
As well as the usual themes like Motown, Disco, '80s, Oscars and Divas being thrown in the mix, there are other fun ideas such as Girl Band versus Boy Band and the super intriguing Louis Loves, which is basically going to revolve around Louis Walsh's personal favourites!
Fingers crossed that one gets chosen 'cause it sounds fascinating! Who else reckons there will be at least one Westlife track in there?!
Meanwhile, the X Factor finalists are currently in rehearsals at Fountain Studios in London ahead of Saturday night's live show. Some of them have already revealed their song choices, while others are a mystery.
This year's X Factor finalists are:
Emily Middlemas - Toxic by Britney Spears
Saara Aalto - Let It Go by Idina Menzel
Brooks Way - Cake By The Ocean by DNCE
5 After Midnight
Ryan Lawrie - Perfect by One Direction
X Factor's live shows start Saturday at 8pm on ITV.