Former Fleetwood Mac guitarist Danny Kirwan has died in London aged 68.
Kirwan was described as a "huge force" in Fleetwood Mac's early years, penning some of their lesser-known songs and contributing vocals.
As a teenager, Kirwan's band Boilerhouse supported Fleetwood Mac at venues in London before he was invited to join the group itself in 1968.
His work was featured on five of the band's albums released between 1969 and 1972.
He passed away on 8 June according to a post on the band's official Facebook page by drummer Mick Fleetwood.
"Danny's true legacy, in my mind, will forever live on in the music he wrote and played so beautifully as a part of the foundation of Fleetwood Mac, that has now endured for over 50 years," Fleetwood wrote.
"Thank, Danny Kirwan. You will forever be missed!"
Kirwan's work featured on the following albums: Then Play On (1969), Blues Jam at Chess (1969), Kiln House (1970), Future Games (1971) and Bare Trees (1972).
Kirwan left Fleetwood Mac in 1972 after a falling out with the other members of the band.
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He was inducted into the Rock and Roll Hall of Fame in 1998 as part of Fleetwood Mac.
Reports suggest Brixton-born Kirwan leaves behind a son.