Heralded instantly as one of New York's leading rap voices, Nas expressed an outspoken, self-empowered swagger that rallied the streets of his city and elsewhere. Whether proclaiming himself "Nasty Nas" or "Nas Escobar" or "Nastradamus" or "God's Son," the self-appointed King of New York battled numerous adversaries for his position atop the epicenter of East Coast rap, none more noteworthy than Jay-Z, who vied with Nas for the vacated throne left in the wake of the Notorious B.I.G.'s 1997 assassination.