Rapper also cites Trent Reznor and Radiohead's Thom Yorke as influences
Rapper also visits Twitter's offices for another a cappella performance
Rapper admits feeling 'moments of doubt' in album build-up
'Good Ass Job' is due out on September 14
Knight suing West for damages over club shooting
Rapper’s MTV stage invasion sees him beat off Simon Cowell
Rapper escapes battery charges after completing 50 hours community service
Rapper looks to Gill Scott-Heron and Nina Simone for inspiration
West makes first public appearance since Taylor Swift incident