And that would be "Back In Black," released today in 1980, 5 months after the untimely death of AC/DC's lead singer Bon Scott, in the back seat of a car in London. Alcohol poisoning? A heroin OD? Carbon monoxide poisoning? Choking on his own vomit? Hypothermia? Its never been determined. The guys found a new lead singer to replace Bon, Brian Johnson. Decent choice. "Back In Black" has become of the best selling albums, by any artist, in history. Getty