Each Taylor Swift album to date has taken her a step further away from the traditional country with which she first made her name as a teenage songwriting prodigy, but even so, the sound of a dubstep drop, magnificently executed, on I Knew You Were Trouble is a shock. In truth, Swift's big international pop move for country-shy markets comprises a mere sprinkling of perky Max Martin productions, with the emphasis elsewhere being firmly on the songcraft. All Too Well and The Lucky One possess twists to make you gasp; as ever, Swift seems to know just the right phrase to pull you inside her break-up narratives.