Here are about four minutes worth of reasons why Janet Jackson should never share a mic with Mariah Carey. With "A Vision of Love," the world was introduced to Mariah's often imitated but never duplicated (I'm talking to you, Christina Aguilera) voice, and, I'm just realizing now, a decades-long penchant for skin-tight clothing. Despite the cat suit, the sparse set on the video highlights the clarity of her voice and the lyrics of the song in a way that washing a car in daisy dukes or struggling through awkward, overly-sexualized choreography never could. What a shame.