US rapper Kanye West got London's Wireless festival off to a controversial start as he was booed on the opening night.

Music is the food of eternal love in Paul Andrew Williams’s comedic drama about personal triumph and reconciliation in the wake of terminal illness.

“I felt I really had to do this film because rap music saved my life,” explains Ice-T, narrator and co-director of this glossy documentary which celebrates the men and women who propelled the lyrical art form into the musical mainstream.