Songwriter behind hits by Eminem, Rihanna and Selena Gomez goes on tour to promote her own sultry urban sound, playing Toronto’s Phoenix on Thursday. Nick Krewen Music, Wed. March 22, 2017 After a few years of hovering in the background and serving as collaborator, Bebe Rexha is finally grabbing the spotlight for herself. The 27-year-old Brooklyn native, appearing at the Phoenix on Thursday, is embarking on her first headlining tour after…