Malcolm Young, legendary AC/DC icon, has passed away aged 64.
Young's family released a statement late on Saturday night announcing the sad news.
"It is with deepest sorrow we inform you of the death of Malcolm Young, beloved husband, father, grandfather and brother.
"Malcolm had been suffering from Dementia for several years and passed away peacefully on Saturday with his family by his bedside."
Young had retired from performing with AC/DC in 2014 due to his health.
He leaves behind a wife and two children. Plus a reputation and legacy as one of the most important and influential figures in rock music.
His rhythm guitar and pumping riffs were widely considered the driving force behind the global success of AC/DC, the band he formed and played in for 45 years. It is also often suggested that he was the true leader of the band, despite brother Angus' iconic frontman status.
Young's passing comes just four weeks after his brother George also died, aged 70.
The family's statement continued: "Renowned for his musical prowess, Malcolm was a songwriter, guitarist, performer, producer and visionary who inspired many.
"From the outset, he knew what he wanted to achieve and, along with his younger brother, took to the world stage giving their all at every show. Nothing less would do for their fans."
We extend our sincerest condolences to the Young family as we raise the devil's horns up in honour of Mal Young. A true blue rock legend.