All around the land, love cheats, heart thieves and philanderers have just been presented with the anthem they can holler in the face of those that they have wronged. ‘I’m Not Sorry’ is a terrific, scratchy headlong barrel-roll down hillsides of galloping, uncomplicated indie pop, with an adorably ham-fingered guitar solo and a heart as big as an elephant’s bits. They’re not sorry, and you won’t be either.