Malcolm Young, a co-founder of legendary rock band AC/DC, has died, aged 64.
"With enormous dedication and commitment he was the driving force behind the band," the rock group said on its website on Saturday.
"As a guitarist, songwriter and visionary he was a perfectionist and a unique man."
Malcolm formed AC/DC with his brother Angus, both Scottish immigrants, in Sydney in the 1970s. The group has sold some 200 million albums. Its brand of bluesy working-class rock has earned it a massive global following.
In 2014, Young bowed out of the band, after relatives said he had dementia.
Last month, Malcolm's brother, AC/DC mentor George Young, died aged 70.
AC/DC has produced pub anthems such as "Long Way to the Top," "You Shook Me All Night Long," and "Back in Black" as well as other well-known hits, including "Dirty Deeds Done Dirt Cheap" and "Highway to Hell."
The band released its last album, Rock or Bust, in 2014.
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