Another rock great has passed as AC/DC confirmed co-founding guitarist Malcolm Young has died. Malcolm helped form the legendary Australian rock band with his brother Angus and Malcom’s writing and rhythm work was at the heart of AC/DC’s massive catalog of iconic songs. Young was 64.

Read a note from AC/DC:

• Today it is with deep heartfelt sadness that AC/DC has to announce the passing of Malcolm Young.
• Malcolm, along with Angus, was the founder and creator of AC/DC.
• With enormous dedication and commitment he was the driving force behind the band.
• As a guitarist, songwriter and visionary he was a perfectionist and a unique man.
• He always stuck to his guns and did and said exactly what he wanted.
• He took great pride in all that he endeavored.
• His loyalty to the fans was unsurpassed.

Angus added, “As his brother it is hard to express in words what he has meant to me during my life, the bond we had was unique and very special. He leaves behind an enormous legacy that will live on forever. Malcolm, job well done.” Malcolm’s family issued a statement which read in part, “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.”

Malcolm formed AC/DC with his younger brother in Sydney in 1973. He was part of the band for every period including before Bon Scott’s passing and after (with the exception of a period in 1988) until he retired in 2014. Young was said to be battling dementia. His nephew Stevie took his place in the touring version of AC/DC during a tour in support of 2014’s Rock Or Bust.

Tributes to Malcolm Young have started to flood in: