Influential guitarist Bert Weedon, best known for creating the popular tutorial manual Play In A Day, has died aged 91.
Eric Clapton, Paul McCartney and Brian May are among the stars who learned to play guitar from his books.
Born in east London, in May 1920, he had been ill for some time and died at his home in Beaconsfield, his friend John Adrian said.
He was awarded an OBE in the 2001 Queen's Birthday Honours List for his services to music.
Queen guitarist Brian May said: "He will be so sadly missed by all his friends because he is one of the most generous and giving people I have ever met in my life.
"He was always teaching people, privately and publicly. You know, he didn't have any secrets from anyone and he was so supportive to us all."
He added: "There's not a guitarist in Britain from my generation who doesn't owe him a great debt of gratitude."