Che Chesterman's mystery X Factor celebrity duet may have just been revealed.
In a post on the official X Factor website, ITV have revealed that one of Che's tracks Saturday night will be Phil Collins classic In The Air Tonight.
The track is neither Che's song of the series (Amy Winehouse - Tears Dry on Their Own / Marvin Gaye - Ain't No Mountain High Enough) nor his new solo choice (Bruno Mars/Amy Winehouse - Valerie) which would suggest it being his duet song.
Even if it is, it doesn't necessarily mean that Che will be singing with the legendary singer himself as X Factor duets in the past haven't always seen a song by the celebrity guest performed.
But the name certainly fits the teasers that Nick Grimshaw gave us yesterday.
Chatting to us at Wembley Arena ahead of the final on Saturday, Che and mentor Nick teased their plans but refused to say who Che would be singing with.
All we got out of them was that Che's mysterious guest star is a BIG name who has sold millions of records. They're also a solo act and NOT Adele.
In fact, Nick said this person was so big that even Adele would be starstruck.
While Che's duet isn't confirmed, Rita Ora and Louisa Johnson ARE singing together, although both ladies are on voice rest ahead of their performance on Saturday night.
The X Factor 2015 final airs this Saturday and Sunday night on ITV fro 8PM.
Watch our chat with Che and Nick below...