Simon always wheels out 'Impossible' for his favourite. He said in an interview once that it's one of his favourite songs. He even made Fifth Harmony sing it twice on X Factor USA. There's nothing exciting on that song list. I was excited for Freddy as I like his voice, but he's obviously going to just do a slowed down version of the song which is nothing original as it's been done about a million times on YouTube by other people...similar thing with Emily and her song. Gifty is doing 'That's My Girl'...what a coincidence that it's the upcoming single by his favourites Fifth Harmony who are due to come over to the UK soon for promo and no doubt appear on the XF I bet and perform it. As if he sat down and she had a say in that song choice...it's just done to help with promo for FH. None of the song choices sound interesting or exciting.