Track taken from free mixtape 'The Mixtape Vol.2'
Download 'The Mixtape Vol.2' from dirteetv.com
Taster for the six-track EP will be unveiled on January 1
Rapper tweets spoof pic but says he was offended by offer
Prime Minister tells Kate Middleton that her grandmother-in-law is a big fan of the rapper
The London 2012 kick-off also paid homage to host of classic British songs
Track is one of five official songs for the Olympics
The MC joins Muse, The Chemical Brothers, Delphic and Elton John/Pnau in recording a track for London 2012
The Stone Roses and Noel Gallagher's High Flying Birds also play third day of Spanish bash