If you were wondering why 'Dr Dre' was trending in the UK for most of yesterday evening, it's because he made a surprise appearance at the first of Eminem's historic Wembley shows.
Last night (11 July), Eminem played the first of two back-to-back gigs at London's Wembley Stadium - becoming the only rapper to ever headline the venue.
Part way through his 35-song set, the rapper was joined onstage by his mentor Dr. Dre, who signed the young Marshall Mathers back in 1998.
The two performed three songs together; 'Still Dre', 'Nuthin' But A G Thang' and 'Forgot About Dre', before the Beats entrepeneur left the stage.
Sadly though, there was no sign of Rihanna during 'The Monster' or 'Love The Way You Lie', and, even more devastatingly, no Dido during 'Stan'. There's always tonight.
Eminem returns to Wembley Stadium for his second and final show tonight (12 July). The full setlist from last night is below. We suggest you don't look at it if you tried and failed to get tickets.
Eminem played:
'Bad Guy'
'Square Dance'
'Won't Back Down'
'3AM'
'Business'
'Kill You'
'White America'
'Mosh'
'Evil Deeds'
'Rap God'
'Marshall Mathers'
'Don't Give A Fuck'
'Still Don't Give A Fuck'
'Criminal'
'The Way I Am'
'Dead Wrong'
'The Next Episode'
'Still Dre'
'Nuthin' But A G Thang'
'Forgot About Dre'
'Love The Way You Lie'
'Stan'
'Sing For The Moment'
'Like Toy Soldiers'
'Forever'
'Berzerk'
'Survival'
''Till I Collapse'
'Cinderella Man'
'The Monster'
'My Name Is'
'The Real Slim Shady'
'Without Me'
'Not Afraid'
'Lose Yourself'