Pop star Rita Ora has been added to the talent performing at the Oscars next month (Feb15). Telecast bosses have confirmed she will sing Grateful from Beyond the Lights, one of the five compositions up for this year's Best Song award. John Legend and Common will also perform their song Glory from Selma and Adam Levine will sing Lost Stars, the Oscar-nominated track he and Keira Knightley sang together in Begin Again.