I'm surprised the bookies have Calum Scott as the favourite. If he wins there's really no hope for the show.
It's between UDI and Revelation Avenue for me but as always it depends how acts get treated in the live shows by producers and who gets a decent slot in the final.
As an outside shot to make the top 3, if he gets good treatment, I fancy the lad with a deep voice who sang cry me a river. Does anyone know his name?