Disco with just a teasing hint of hop, this is the kind of the purity that I'm thinking of when people invoke "pure pop" (as opposed to, say, Death Cab for Cutie) - manufactured, sure, whatever, but also manicured, sleek, graceful, and largely perfect. Y'know, the songs that soundtrack prom nights: the ones with an undeniable, near-universal functionality. There's that same unmistakable core ache that's at the heart of all great dance music - we had our problems but still, that chirpy chipmunk diva vocal punctuating the thump-chikka-thump propulsion (is it Kanye? if so, his name goes off "Chilled" instantly)(and "Diamonds" is hot too btw). Twista isn't extraneous for a moment here, so perfectly locked into the groove, just dropping syllables into the swirl.