Danny Kirwan, a former guitarist for the band Fleetwood Mac, has died.
The musician's work appeared on five of the band's albums, starting when he was just 18 years old.
Kirwan died in London Friday at the age of 68. A cause of death was not made public.
Mick Fleetwood reacted to the news on Facebook.
"Danny was a huge force in our early years," Fleetwood wrote. "His love for the Blues led him to being asked to join Fleetwood Mac in 1968, where he made his musical home for many years."
According to Rolling Stone Kirwan first appeared on the band's number one hit single "Albatross" and recorded five albums with the group as both a guitarist and singer.
Kirwan also contributed to songwriting while in the band. However, he was fired from Fleetwood Mac during their tour for the album "Bare Trees" in 1972 due to his problems with alcohol abuse.
Kirwan would go on to release several solo albums but continued to struggle with mental health issues and, at times, reportedly found himself homeless.
Nonetheless, Kirwan was among the band's members who were inducted into the Rock and Roll Hall of Fame in 1998.