"I know NO ONE has heard this before"Eminem and Proof in 2003An unreleased Eminem and Proof freestyle from 1999 has been shared online – check it out below. Read More: “Hi, my name is…” – 20 years of Eminem’s ‘The Slim Shady LP’ Emerging from ‘The Slim Shady LP’ era, Marshal Mathers performed the cut with the late D12 member on Tim Westwood’s New York Live. The […]The post Listen to an unreleased Eminem and Proof freestyle from 1999 appeared first on NME.