Peter Green was the co-founder of Fleetwood Mac.
Inducted into the Rock and Roll Hall of Fame in 1998, his songs, such as "Albatross", "Black Magic Woman", "Oh Well", "The Green Manalishi (With the Two Prong Crown)" and "Man of the World", have touched the hearts of music fans across the world.
Solicitors acting on behalf of his family said in a statement: "It is with great sadness that the family of Peter Green announce his death this weekend, peacefully in his sleep. A further statement will be provided in the coming days."
Green was a founding member of Fleetwood Mac, with drummer Mick Fleetwood.
Known for taking large doses of LSD, wearing a crucifix and robes, bandmates admitted to feeling concerned about Green as the band's popularity grew. In what was called a crucial point in his mental decline by band manager Clifford Davis, Green took LSD at a commune party in Munich and decided he did not want to leave the commune. He left the band later that year. His final performance with the band was on May 20, 1970.
Green was eventually diagnosed with schizophrenia and spent time in psychiatric hospitals undergoing electroconvulsive therapy during the mid-1970s.
In 1988 Green was quoted as saying: "I'm at present recuperating from treatment for taking drugs. It was drugs that influenced me a lot. I took more than I intended to. I took LSD eight or nine times. The effect of that stuff lasts so long.... I wanted to give away all my money.... I went kind of holy - no, not holy, religious. I thought I could do it, I thought I was all right on drugs. My failing!"
Green married Jane Samuels in January 1978; the couple divorced in 1979. They have a daughter, Rosebud (born 1978).