What separates a rap star from the greatest of all time? Well, 15 years of not releasing anything other than No. 1 albums is a good start. More than a hitmaker, Jigga is also been a trendsetter in hip-hop. Whether it's a crossover LP with LINKIN PARK, or an exercise in excess with Kanye, JAY Z only knows one sound: The one that the hip-hop world wants to hear, even if it might not know it yet.