But who is he?
Adele to perform on X-Factor final
Reports suggest the 'Someone Like You' star has been booked to play at the Wembley Arena final on December 11th.
It will be the 23-year-old's first gig since undergoing throat surgery after being diagnosed with a haemorrhage on her vocal chords.
Time will tell which finalist will duet with the chart-topper but insiders suggest it will be Amelia Lily, should she make the final three.
Other acts booked to perform duets include Coldplay and Michael Bublé, who have been tipped to sing alongside Janet Devlin and Marcus Collins respectively.
Meanwhile, Adele said in her latest blog that she feels "on the mend" following her surgery.
This is for a very serious reason.
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