 In August 1979 , after two warm @-@ up shows in Copenhagen , Led Zeppelin headlined two concerts at the Knebworth Music Festival , playing to a crowd of approximately 104 @,@ 000 on the first night . A brief , low @-@ key European tour was undertaken in June and July 1980 , featuring a stripped @-@ down set without the usual lengthy jams and solos . On 27 June , at a show in Nuremberg , Germany , the concert came to an abrupt halt in the middle of the third song , when Bonham collapsed onstage and was rushed to hospital . Speculation in the press suggested that his collapse had been the result of excessive alcohol and drug use , but the band claimed that he had simply <unk> . 
