Rapper confirms that he will appear at London shows on July 11-12
Rapper's collaboration with Sia soundtracks Denzel Washington film
US rapper will play two huge London shows in July
Lyrics were analysed by US based drugs information and education organisation Project Know
Rapper returns to Detroit for Spike Lee directed promo
First London show sells out after going on sale earlier today (May 9)
The hip-hop star will head up the huge venue this summer - his first London show since 2001
First event in league will take place on July 12 at New York's Hammerstein Ballroom
Rihanna picks up Best Cameo award for 'This Is The End' too
Pair will perform 'The Monster' for the first time at awards ceremony ahead of joint US tour