They may well never have met, let alone shared studio air but Blu and Sean have still crossed the line separating “featuring” from “duet”. The two-hander has Blu saying she’ll go and Sean telling her no, and plays exquisitely to both their strengths. Cantrell does the mink-lunged hyperventiliating R&B siren thing, working up to a pitch of desperation/determination over the hijacked Dr.Dre rhythm (nice to have it back, by the way). She’s had enough, she needs some space, please let her breathe – so far so ballad but it’s Sean Paul who makes the track by deflating Blu completely. Yeah whatever, give it a rest lady; he’s coming from the callous side of laid-back but as the most charismatic man in current pop it’s him I’m rooting for. Or maybe I’m just a heel.