The X Factor finalists have reportedly recorded their potential winner's singles, with Union J poised to release Demi Lovato's 'Skyscraper'.
According to online speculation and an earlier report in The Sun, JJ, Josh, Jaymi and George have laid down vocals to their own rendition of the X Factor USA judge's most successful solo single.
The track is one of only two of her UK Top 40 hits, and also peaked inside the US Top 10, having rocketed to the iTunes No1 spot within hours of release. It's had 75.9 million views on YouTube.
Simon Cowell is thought to be hopeful that, if Union J do win and get to release the song, it will raise Lovato's British profile.
It is not known what Jahmene Douglas, Christopher Maloney and James Arthur have recorded, but it is believed that the tracks were recorded weeks ago - when Rylan Clark and Ella Henderson were also still in the competition.
Last year all finalists had to record a version of Damien Rice's 'Cannonball', but in 2010 each act had a different option.
Matt Cardle released 'When We Collide' - originally Biffy Clyro's 'Many Of Horror' - Rebecca Ferguson had Duffy's 'Distant Dreamer', One Direction prepared 'Forever Young', and Cher Lloyd 'Impossible', originally by Shontelle.
Only the top two acts will get to showcase their covers, and with Union J the bookies' favourites for elimination this weekend, the odds aren't in their favour.
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