An emotionally overwhelming performance was what Rihanna delivered during her collaboration with Mikky Ekko at last night’s Grammy Awards. The singer sat with boyfriend Chris Brown all night but left his side to pour out a strong concoction of v-o-c-a-l-s. The track she performed was ‘Stay’ off her latest album ‘Unapologetic’! We here, lurved it! One of her strongest performances to date. Make sure you tune in to E! News for the exclusive video premiere later today!