Sad.

Malcolm Young, guitarist and co-founder of pioneering rock band AC/DC, has passed away, the band said in a statement Saturday. He was 64.

Young founded the Australian rock band with his brother Angus in 1973. He was the group's rhythm guitarist until 2014, when the band announced he was taking a leave of absence for health reasons. It was later revealed he had been diagnosed for dementia.

Young's family said he passed away peacefully Saturday with his family at his bedside. He is survived by his wife O'Linda and two children.

https://www.cbsnews.com/news/malcolm-young-acdc-guitarist-and-co-founder-dead-at-64/

More detail added by one of your friendly neighborhood Mods.