Eminem made history Friday night, becoming the first rapper to headline London's Wembley Stadium – and he didn't do it alone.

We're not talking about Danny Brown and Odd Future, who opened for Em, we're talking about a very special guest brought on the stage by the Detroit rapper: Dr. Dre. Eminem's mentor and frequent collaborator sauntered out to the tune of "The Next Episode" and performed "Still D.R.E.," "Nuthin' But A 'G' Thang" and "Forgot About Dre" for the sold out crowd.

Eminem – backed by a full band – opened his set with "Bad Guy" and transitioned to "Square Dance" and "3AM," then delved into classics like "The Way I Am," "My Name Is" and "Without Me" before pulling out his tried and true closer, "Lose Yourself."

This was Eminem's first show in London since 2001 – his various UK performances in the interim have involved headliners at festivals – and he played a second show at Wembley on Saturday night. In the wake of his Marshall Mathers LP 2 hitting No 1 on the UK charts, he's now the first US artist to boast seven consecutive UK No 1 albums. Eminiem kicks off his US tour with Rihanna on August 7th.