David "Honeyboy" Edwards's voice all but creaks as he talks, but even at 95 the closest living musical link to blues legend Robert Johnson remains as potent a force as ever.
"I met Robert when I was 20 years old and he was 24," Edwards recalls. "He was playing the harp [harmonica] with Son House and Willy Brown near a Mississippi lake called Lake Cormorant."
On Sunday, fans worldwide will celebrate the centenary of Johnson's birth. Concerts are being held in Greenwood in Mississippi's Delta region, where Johnson died in 1938 aged just 27, as well as a memorial service in nearby Little Zion, believed to be his final resting place. His grandson, Steven, a church minister, will lead the prayers.
For Edwards, Johnson's friend, regular gig partner and the last surviving major blues musician from the era before the second world war, it is a day to cherish.
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