Answer the question at the end by quoting:

Led Zeppelin were an English rock band formed in London in 1968. The group consisted of guitarist Jimmy Page, singer Robert Plant, bassist and keyboardist John Paul Jones, and drummer John Bonham. The band's heavy, guitar-driven sound has led them to be cited as one of the progenitors of heavy metal. Their style drew from a wide variety of influences, including blues, psychedelia, and folk music.
In November 1978, the group recorded at Polar Studios in Stockholm, Sweden. The resulting album, In Through the Out Door, featured sonic experimentation that again drew mixed reactions from critics. Nevertheless, the album reached number one in the UK and the US in just its second week of release. With this album's release, Led Zeppelin's entire catalogue returned to the Billboard Top 200 in the weeks of 27 October and 3 November 1979.  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 overeaten.  A North American tour, the band's first since 1977, was scheduled to commence on 17 October 1980. On 24 September, Bonham was picked up by Led Zeppelin assistant Rex King to attend rehearsals at Bray Studios. During the journey, Bonham asked to stop for breakfast, where he downed four quadruple vodkas (from 16 to 24 US fl oz (470 to 710 ml)), with a ham roll. After taking a bite of the ham roll he said to his assistant, "breakfast". He continued to drink heavily after arriving at the studio. The rehearsals were halted late that evening and the band retired to Page's house--the Old Mill House in Clewer, Windsor.  After midnight, Bonham, who had fallen asleep, was taken to bed and placed on his side. At 1:45 pm the next day, Benji LeFevre (Led Zeppelin's new tour manager) and John Paul Jones found Bonham dead. The cause of death was asphyxiation from vomit; the finding was accidental death. An autopsy found no other recreational drugs in Bonham's body. Although he had recently begun to take Motival (a cocktail of the antipsychotic fluphenazine and the tricyclic antidepressant nortriptyline) to combat his anxiety, it is unclear if these substances interacted with the alcohol in his system. Bonham's remains were cremated and his ashes interred on 12 October 1980, at Rushock parish church, Worcestershire.  The planned North American tour was cancelled, and despite rumours that Cozy Powell, Carmine Appice, Barriemore Barlow, Simon Kirke, or Bev Bevan would join the group as his replacement, the remaining members decided to disband. A 4 December 1980 press statement stated that, "We wish it to be known that the loss of our dear friend, and the deep sense of undivided harmony felt by ourselves and our manager, have led us to decide that we could not continue as we were." The statement was signed simply "Led Zeppelin".

How did Bonham die?

The cause of death was asphyxiation from vomit;



Answer the question at the end by quoting:

Ratt is an American heavy metal band that had significant commercial success in the 1980s, with their albums having been certified as gold, platinum, and multi-platinum by the RIAA. The group is perhaps best known for hit singles such as "Round and Round" and "Lay It Down", tracks that ranked on Billboard's top 40 at No. 12 and No. 40, respectively, as well as other songs such as "Wanted Man", "You're in Love" and "Dance".
The origins of Ratt go as far back as 1973 in Hollywood, with a band called Firedome, founded by singer Stephen Pearcy with a few friends. In 1974 the band broke up, with Pearcy forming Crystal Pystal. The name Crystal Pystal was later changed to Buster Cherry, which turned into Mickey Ratt in 1976.  Guitarist Robbin Crosby in those same years had been a member of the bands Metropolis with Tommy Asakawa and Parramore McCarty, Xcalibur, Phenomenon, Secret Service and Mac Meda with Askawa.  Mickey Ratt went through various line-up changes. Members included guitarists Jake E. Lee, Chris Hager, Paul DeNisco, and Bob DeLellis, bassists Matt Thorr, Tim Garcia, Mike New and Dave Jellison, and drummers John Turner, and Bob Eisenberg. The various Mickey Ratt line-ups released several demos compilations and a live concert recording.  In 1980, to increase their chances of landing a recording contract with a major label, the band recorded a single called "Dr. Rock" / "Drivin' on E", which was given to fans at their early Los Angeles club shows.  In 1981, the band's name was shortened to Ratt. Crosby played with the band later in the year. Guitarist Warren DeMartini, recommended by Lee, joined the band in January 1982. Bassist Gene Hunter (from Jake E. Lee's Teaser) and drummer Khurt Maier (who played drums on the early "Tell the World" recording featured on the compilation Metal Massacre I) temporarily played in Ratt before the arrival of Bobby Blotzer (ex-Vic Vergeat) and Juan Croucier (previously with Dokken, and musically active since 1973). DeMartini was only 18 years old when he was called up to Los Angeles to join Ratt. At the time he was attending college in San Diego and was reluctant to drop out to join a band that had, so far, had only limited success. Marq Torien briefly replaced DeMartini, though he returned in time for the recording of their first EP, later in 1982.

Did any members join or leave during this time?
Mickey Ratt went through various line-up changes.