Original Singer: Bon Scott
Reason for Departure: Scott died in 1980 of acute alcohol poisoning and "death by misadventure," although conspiracy theories abound, including the popular beliefs that Scott died of a heroin overdose, asphyxiation from exhaust fumes (he was left in a car overnight) or asthma.
The Replacement: Brian Johnson
Following the loss of their frontman, the surviving members of AC/DC reached out to a singer Scott had often spoken of in admiration, English metal singer Brian Johnson. Once Johnson was officially hired on, the band finished the album that had already been in progress at the time of Scott's death – "Back in Black," which would go on to become the second best-selling album of all time. —Jeff Royer
(Photos: Ennio Leanza, AP Images)
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