Like anything involving the late Bon Scott, there are a couple of stories about where AC/DC's "Jailbreak," released in June 1976, came from.
Guitarist Angus Youngonce said that the impetus for the song - a sinewy, semi-spoken account of a convict who tries to flee prison only to be (spoiler alert!) shot in the back as he galloped to freedom - was based on someone Scott met in a Perth, Australia, jail after he was arrested prior to joining AC/DC.
Another account, however, contends that Scott wrote the lyrics after reading a newspaper account about Mark Brandon "Chopper" Reid, who was sentenced to 16 years for murdering a gang leader and decided to attempt an escape three years into his sentence. He was caught when his accomplice, Jimmy Loughnan, freaked out due to a fear of tight spaces.