It's clear a lot of people here a)don't listen to his other album songs b)don't understand a commercial show. He is performing at a commercial show, he has got to be relevant to X Factor's poppy theme. OMG may well be poppy for him, although did extremelly well, is well known and is performed as everybody knows it. Also, there's other good ballads from his latest album, so he can still do ballads as well.