Cole reveals that he developed close and personal friendships with each of the band members , and recounts the devastating impact that the death of John Bonham had on him . He also discusses the substance abuse problems which he developed in the 1970s , and which ultimately led to him being fired by Led Zeppelin 's manager , Peter Grant , after the Knebworth Festival in 1979
Knebworth Festival in 1979
Knebworth Festival 1979
Stairway to Heaven: Led Zeppelin Uncensored