On "The X Factor" U.K., Olly Murs came in second place in 2009; Union J came in fourth place in 2012; Arthur was the winner in 2012; Little Mix was the winner in 2011; and Humes and his singing group JLS came in second place in 2008.
Little Mix debuted a new song called "Little Me" at the event.
Humes performed as a DJ to do a warm-up set for the crowd.
Other performers at the event included Katy Perry, Lady Gaga, Jason Derulo, Dizzee Rascal, Ellie Goulding, the Vamps, Lawson, Elyar Fox, Jessie J, Rudimental, Disclosure and John Newman.
Here are the set lists for the "X Factor" stars who sang songs at the event:
Olly Murs' 2013 Capital FM Jingle Bell Ball set list:
- Army of Two
- Heart Skips a Beat
- Dance With Me Tonight
- Hand on Heart
- Dear Darlin'
Union J's 2013 Capital FM Jingle Bell Ball set list:
- Loving You Is Easy
- Beautiful Life
- Christmas Medley (I Wish It Could Be Christmas Everyday, Last Christmas and Santa Claus Is Comin' to Town)
- Carry You
James Arthur's 2013 Capital FM Jingle Bell Ball set list:
- You're Nobody 'Til Somebody Loves You
- Wrecking Ball
Little Mix's 2013 Capital FM Jingle Bell Ball set list:
- How Ya Doin'? (acoustic)
- Little Me