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Derek Scott, brother of AC/DC’s late frontman Bon Scott, stayed silent when Bon died of alcohol poisoning on February 15th, 1980 at the age of 33. Over 40 years later, Derek has finally spoken about his brother’s life and untimely death.

Last night Australian Story: On the Brink – Bon Scott aired on ABC’s Australian network. The TV documentary features interviews with Scott’s friends and family, including members of his pre-AC/DC band Fraternity. Derek Scott was included in the film and discussed the wild antics of his older brother.

“He did get bored very quickly,” Scott said about Bon. “That was the biggest problem. When he got bored, he drank. He never worried about tomorrow. Tomorrow is another day.”

After Scott’s unfortunate passing, singer Brian Johnson joined AC/DC as his replacement. It was then that the band’s fame skyrocketed after the release of Back In Black in 1980.

“I wish he was here to know that he’d made it,” Derek Scott continued about his brother who his family often referred to as Ron (his birthname is Ronald). “Ron would have been 75. If Ron could see what was happening in the world today over himself, I think he’d have a good laugh. He really would. He’d be surprised, but he’d have a good laugh — and a drink.”

Watch the entire episode of Australian Story: On the Brink – Bon Scott here: