For years now, Tim Westwood has been somewhat of an “Eminem Plug,” responsible for hosting some of Slim’s most iconic freestyles. From the thirty-eight minute D12 extravaganza, to the iconic Relapse-era “Swag Juice” freestyle with Mr. Porter, Westwood has always been Em’s go-to-guy where radio bars are concerned. Today, to celebrate the aforementioned “Swag Juice’s” ten-year anniversary, Tim Westwood has decided to share a never-before-heard freestyle between Eminem and the late Big Proof.

The freestyle session, recorded back in 1999, finds Em kicking things off with some noted off-the-domery, a testament to his effortless artistic chemistry with Proof. “This is right off the top,” spits Em, “take a bottle of pop and bite off the top.” Eventually, he passes the mic to MC Proof, whom Em invites to “raise the roof.” “To many white and black people I be gnarly, rocking with Tim Westwood and Mr. Marley,” raps Proof, alluding to the oft-referenced Marley Marl. Once “Guilty Conscience” instrumental cues up, the pair joke that it’s too fast for them.  “I’m pathetic, I need a little bit of Excedrin, to make my damn head spin,” raps Em, a line that has become far more alarming in hindsight.

Be sure to check this one out, especially if you’re looking to revisit a bygone era. Respect to Tim Westwood for sharing this, and rest in peace to Big Proof. All things considered, what’s your favorite Em & Proof collaboration?

[via]