If Roman Zolanski is Nicki’s alter ego, Nikki is Kanye West’s better half. Her new single is all ferocious, gnashing melodrama, taking hip hop to psychotic operatic heights that Kanye can only tweet about. Popping with dancehall rhythms, the track includes mad jabbering rhymes that bend and flex with elastic stretch, hollering, moaning, skittering and bouncing in unfettered, full flight rap queen brilliance. Amazing.