The remaining contestants were planned to sing TGIF by Katy Perry but are now in the process of picking a new one following Jahmene's refusal.
An X Factor snitch told The Sun: "Bosses are desperately trying to find a new song for this weekend's group ensemble after Jahmene's refusal."
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But before you go away thinking that Jahmene just isn't a Katy Perry fan, his refusal comes after reading the song's lyrics.
You see, TGIF is all about drinking and dancing on tables etc.
Jahmene singing something other than Katy Perry. [Copyright Wenn]
The source explained: "Jahmene has said no. The song is about partying and drinking and Jahmene is teetotal."
Well, it's not like he had to sing it while drinking a pint of Guinness but we suppose we can understand where Jahmene is coming from.
After all, the song does feature lyrics like: "There's a stranger in my bed, there's a pounding my head," and "I smell like a minibar. DJ's passed out in the yard."
However, show bosses have respected Jahmene's wishes and are now looking for a new group song.
And anyway, the show is on a Sunday so it would have hardly made sense.
Plus, we thought it was guilty pleasures week this week?
And while we are on the subject of Jahmene Douglas: he really does have the tiniest hands in the world.
We shook one the other day and have met babies with bigger ones.