Peter Kramer / Getty Images
For his eighth studio album, "Hip Hop Is Dead", Nas left his longtime label Columbia for Def Jam Recordings. The album, whose name was inspired by Nas' feeling about the genre at the time, brought on controversy from other hip-hop acts. Despite this, the album charted well and featured production from Kanye West and will.i.am. The album also featured a guest spot from former rival Jay-Z on "Black Republican."