Track is lifted from soundtrack to 'The Hunger Games: Mockingjay - Part 1'
Origins of 'Yeezus' track revealed
It follows on from recent beats produced for Rick Ross, Big Sean and Pusha T
Chicago musician Malik Yusef has worked with West throughout his career
Theophilus London shares story of playing forthcoming record and "moshing drunk with mad babes."
The rapper has been teaching at Los Angeles Trade Technical College
Rapper spoke for over 15 minutes during gig on Australian tour
But rapper was released in time to play gig same evening
Jay Pharoah received a call from rapper after mocking him at award ceremony
The short clip emerges on the US television show featuring the rapper's wife