Hey! Why can't we just love each other and all get on? Well, because that's no fun at all. This year's been jam-packed with feuding artists. Starting with this spot of banter between Los Campesinos! and Haim in December. LC!'s Gareth Paisley tweeted a snap of himself doing the 'V' sign, saying “Playing a gig across the street from a Haim gig tonight”. The girls' response? Times that by 2000.