Dr Luke has literally just posted a twenty second snippet of a new Jessie J song on SoundCloud.
The song, entitled 'Domino', is presumably from some kind of 'deluxe' edition of J's debut album, 'Who You Are', which we predict will be out in December, or close enough to Christmas for this all to be commercially viable.
The song itself features some nice sounding synths, an "oh, oh, oh, oh" bit and what sounds like it could be the chorus but this being Dr Luke it could in fact be a pre-chorus which then leads into an even bigger chorus. Who knows? That's what's so exciting about pop in 2011.
The song does sound a lot like Katy Perry, you're right.