In terms of vocals she doesn't really have much UK competition at present as the industry has been slight in signing females on the basis of singing skills for time, esp' in the Urban genre (Alexandra Burke and Leona aren't Urban)..., and it is novel for an undiluted Urban singer to garner such mainstream backing and acceptance so soon (the fact she's white obviously shouldering most of the reason). But make no mistake, if Jessie J fails to keep the hits coming in, esp' in light of all the hype she's had off the back of ONE song then she'll be sidelined for someone else or dropped...., or have to do what Ellie Goulding's done and revert to hackneyed cover songs i.e. Your Song to stay paid, relevant and in the game. The point is no matter how much Katy Perry and the like change between first and second album it's probably because they know failing to do so only results in one outcome..., Irrelevance.