It's the first results night of the live shows tonight as one of the final 12 must pack up their bags and head away back into obscurity, because we all know nobody ever remembers the acts that go in the first four weeks. As usual, the two with the lowest votes will perform in the sing-off after which judges Nick Grimshaw, Rita Ora, Cheryl Fernandez-Versini and Simon Cowell must decide who will head home. You'll be waiting a while to find out though as there will be a few surprise guest stars along to perform, possibly including last year's winner Ben Haenow... who we had pretty much forgotten about too actually.