<p><br /> US star Mike Posner, who sings the hit Cooler Than Me, is now so popular in the States, than he needs a disguise.<br /> </p><p><br /> "I just wear really baggy stuff with hoods and sunglasses that people wouldn't expect me to wear," the singer said.<br /> </p><p><br /> The overnight success recorded his songs alone in his room at university and uploaded them online for free before record executives tracked him down.<br /> </p><p><br /> Cooler Than Me was chosen by X Factor favourite Cher as her song at the judges houses stage of auditions.<br /> </p><p><br /> However she was unable to finish it after being overcome by emotions.<br /> </p>
