From the rumbling first bars of her immaculately cheeky opening sci-fi disco stormer Bad Boys, it is clear that reality TV has just turned out a performer ready for the world stage. The irresistible, one-listen smash is destined to up Alexandra Burke’s profile from plucky contender to market leader. US rapper Flo Rida’s split second decision to guest on the track was just a neat seal of international approval that proves what many suspected from Alexandra’s star turn, entrancing 13 million viewers a week with her stone-cold soulful renditions of pop songs and genre classics.