Ian McLagan, keyboard player for the Small Faces and the Faces, has died aged 69, due to complications from a stroke suffered earlier this week.
"It is with great sadness and eternal admiration that we report the passing of [a] rock and roll icon," read a statement on his official website.
McLagan, known as Mac, played on such memorable Small Faces tracks as Lazy Sunday and Itchycoo Park in the 1960s.
The band became the Faces when Rod Stewart and Ron Wood joined in 1969.
McLagan went on to record and perform with the Rolling Stones and also worked with Chuck Berry, Bob Dylan and Bruce Springsteen.
The Hounslow-born musician was about to embark on a North American tour, supporting label mate Nick Lowe, at the time of his death in his adopted home town of Austin, Texas.
"I am completely devastated by this shocking news and I know this goes for Ronnie and Rod as well," said Small Faces and Faces member Kenney Jones.
As I've said here on far too many occasions, this death shit is really starting to piss me off.