Tim Westwood continues his own “Throwback Thursday” release series by liberating yet another piece of hip-hop history from his vaults. Following a slew of unreleased, rare freestyles from Westwood’s storied career, the legendary British personality has shared yet another never-before-heard session with Eminem. This time around, Eminem is joined by D12 and the audio dates back to 2004. Today’s drop holds a special significance, as it’s also the ten-year anniversary of Proof’s passing. You can check out the entire freestyle session above.