The deeper reaches of Whitney Houston's vast catalogue contain surprising left turns and stirring collaborations. On “Memories”, an early-'80s collaboration with no-wavers Material, Houston (with the help of sax legend Archie Shepp) turns a lost prog-rock gem into smoothed-out jazz-pop; her wistful vocal on “I Know Him So Well”, from the cult-beloved musical Chess, finds its match in her mother, Cissy.