When Eminem hits the stage, he rarely goes it alone, having already lit up Grammy night with pop luminaries like Elton John and hip-hop upstarts like Drake. This year, he's taking it back to his hip-hop roots by teaming up with longtime mentor and rap legend Dr. Dre, with additional assistance from Maroon 5 frontman Adam Levine.
Sunday's performance promises to be a major hip-hop moment, as not only will Eminem rip the stage, but the set will mark Dre's first live performance in more than 10 years (not counting his hysteria-inducing cameos at Shady and Jay-Z's Home and Home Tour). But what should fans expect from the Doc and Em's first joint awards-show matchup in over a decade? Well, if we take cues from their onstage team-ups back in the day, we can expect the greats to school anyone who may have forgotten about their concert chemistry and serve up more of their renowned, top-flight lyricism.
Source - http://www.mtv.com/news/articles/1657720/eminem-dr-dre-grammy-performance-show-razorsharp-rap-skills.jhtml