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.
Best Classic Bands will have more on the life and death of Kirwan on Saturday.
"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". Former bandmate Mick Fleetwood announced Kirwan's death in a Facebook post Friday.
His first recorded work reached the US on the 1969 compilation album "English Rose", which included the band's chart-topping United Kingdom instrumental "Albatross" and its B side, Kirwan's composition "Jigsaw Puzzle Blues".
Danny Kirwan during a Fleetwood Mac concert in Hannover in Germany in 1970. "You will be forever missed!"
A 2015 piece on Kirwan from the Observer calls him "one of the great lost figures in rock history", citing him as integral to "the transition from the Blues Mac of the 1960s to the mega-selling FM pop machine of the mid-1970s".
DANNY KIRWANMAY 13, 1950 ~ JUNE 8, 2018A TRIBUTE FROMMICK FLEETWOOD AND FLEETWOOD MAC Today was greeted by the sad...
A founding member of the band confirmed the news on Friday evening.. The collection was highlighted by Kirwan's rolling composition "Station Man". Kirwan went on to make three albums in his own right for DJM Records, but none met with any substantial sales success. His recording career ended at that point; his alcoholism and severe mental health problems left him homeless for several years.
When the band was inducted into the Rock and Roll Hall of Fame, he was one of the eight members of the group to be cited in the ceremony, however he did not attend the event.
Kirwan is survived by his only son.
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