The 'Want You To Want Me' singer was the first to be confirmed for the show, that will return to London's O2 Arena on 5 December.
Jason revealed he will be performing this morning, as he joined Dave Berry and Lisa Snowdon on Capital's breakfast show. He is the first of many acts that will be taking to the stage in a few weeks time, with a whole slew of acts to be announced every day this week.
No stranger to the Jingle Bell Ball, Jason has already performed three times previously at the event. Speaking about this year's show, he said: "I've got a special feeling about this year man, it's going to be epic! Capital always just pick the biggest artists in the world and it ends up being a night to remember, every single time!"
But who will join him?
In previous years, the Jingle Bell Ball hasn't been short of superstars, with the likes of Ed Sheeran, Rihanna, One Direction and Lady Gaga all having serenaded the crowd before.
Teasing a lineup that is just as big this time round, Capital have said: "We kick started our big reveal week this morning with one of the hottest male artists of the moment and that's just the beginning! Over the next four days the line-up is set to get much much bigger as we help Capital listeners get closer to the stars this Christmas."
Eek! We can't wait to find out who!
Tickets go on sale for Capital's Jingle Bell Ball with Coca-Cola this Friday 6 November at 8am. For more information visit: www.capitalfm.com/jinglebellball
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