John Mayall, the “Godfather of British Blues,” Dies at 90 PitchforkJohn Mayall was a lightning rod for the blues who changed the course of British music The GuardianEric Clapton Pays Tribute to ‘Mentor’ John Mayall: ‘He Taught Me All I Really Know’ Rolling StoneMusic legend dies months before induction into Rock and Roll Hall of Fame syracuse.comSir Mick Jagger says John Mayall helped to ‘usher in a new era for the Stones’ The Independent