Elton John to headline X Factor final - with Barlow duet

A world exclusive of Gary Barlow and Sir Elton John performing their new single Face to Face will be one of the star turns at this year’s X Factor final.
The pop legends will be joined at the final by Katy Perry, who will sing her latest track Unconditionally, and One Direction, who shot to fame after winning X Factor three years ago and will perform their brand new single Midnight Memories.