Jennifer Hudson cemented her star status in the 2006 film Dreamgirls, turning the soundtrack's signature torch song, “And I Am Telling You I'm Not Going," into a startlingly cathartic gospel aria. The reality TV alum's powerful, expressive voice flourishes in pop-soul and contemporary R&B settings, and her dynamism comes alive with recent forays into ‘70s retromania. She inherited her boogie-funk foremothers' lungs and uses them to maximum effect on the disco-house throwback “Dangerous” and on the R. Kelly collaboration “It's Your World."