Here is the song Jay Z has written for his daughter Blue Ivy Carter. You think all of us fathers should tell Jay Z what he's in for? Giving that little girl everything she ask for, covering for her and taking the fall when she breaks and spills stuff around the house, actually having Beyonce being jealous of her own daughter and saying stuff like, " What are you asking me for? You two have already decided." Naw we'll let him find out...LOL.