Magna Carta...Holy GrailLike few other album openers, "Holy Grail" encapsulates what follows it and reflects a particular point in an artist's career. It's a vigorous if not particularly moving track, principally produced by Timbaland and J Roc, which expresses bewilderment and conflicting emotions about rising from poverty to opulence. The first of a few early '90s references is made the chorus of Nirvana's "Smells Like Teen Spirit" is quoted and Jay Z is as triumphant and