Despacito (Remix) Luis Fonsi & Daddy Yankee feat. Justin B
Union J come to Cardiff's Motorpoint Arena on Sunday 15th December and Capital are giving you the chance to tweet for your seat.
All this week Matt, Polly and Geraint are getting you in to see the boys in Cardiff on Capital Breakfast between 6am - 10am BUT we have another chance for you to win your way in ...
Simply follow @CapitalMPG on Twitter and Tweet #TweetforyourUnionJseat between Tuesday 10th December and Friday 13th December for your chance to see Jaymi, JJ, Josh and George in concert on Sunday 15th December.
On top of seeing the boys in concert we will give you a pair of signed sunglasses that the boys signed for us backstage at this year's Ponty's Big Weekend.