Oprah sits down with global superstar, multiplatinum artist and 17-time Grammy Award winner Beyoncé about the making of her documentary, Beyoncé: Life Is but a Dream (airing Saturday on HBO). Beyoncé also talks to Oprah about her daughter Blue Ivy, what Jay-Z is like as a father and as a husband, letting her father (music executive Matthew Knowles) go as her manager, her heart-breaking miscarriage and what is next for her career and her life.