Leona Lewis took the world by storm when she won 'X Factor' (essentially Britain's 'American Idol'), and she hasn't looked back since, scoring massive hits across the world. PopEater is exclusively premiering an interview with the British songstress about her new single 'Happy,' which she says has "a dark kind of edge to it, because it's not about happiness, it's about striving to get there." Watch the Exclusive Video Below: