"Never Give Up" (RCA) -- the previously unreleased single from the late Whitney Houston's new greatest hits package, "I Will Always Love You: The Best of Whitney Houston," is in stores today. It comes closer to reflecting where Houston was artistically than the songs from the posthumous "Sparkle." Produced by Jermaine Dupri and originally meant for Houston's 2009 album "I Look to You," it's a stylish slice of uplifting R&B that shows how Houston was dealing with the realities of her changing voice and making it work.