Deborah Cox is revealing how she ended up as "the voice" of the legendary Whitney Houston in her 2015 biopic. During the Wednesday, April 8, episode of the "What Matters with Liz" podcast with Woman's World Editor-in-Chief, Liz Vaccariello, Cox, 51, recalled how director Angela Bassett reached out to her for the Lifetime Whitney Houston biographical film, Whitney. "She was the one that called me and said, 'I'm working on this project. Would you sing the music?' And I was like, 'Absolutely,'" Cox shared. "That was the only day that I had off 'cause I was on another project.