Our favorite overseas radio host Tim Westwood constantly tosses the hip-hop world gems. On this #ThrowbackThursday, Tim goes deep into the vault and unleashes a never-before-heard freestyle from Eminem and the late Proof.

The year was 1999 and Em and Proof were unstoppable. Dropping atomic bombs over the catchiest instrumentals, this new freestyle should be added to the playlist as soon as possible.

Take a listen below and tell us what you think.