Heart failure in Florida. Here's the lede of the New York Times obituary:

Bo Diddley, a singer and guitarist who invented his own name, his own guitars, his own beat and, with a handful of other musical pioneers, rock ’n’ roll itself, died Monday at his home in Archer, Fla . He was 79.

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His original style of R&B influenced generations of musicians. And his Bo Diddley syncopated beat — three strokes/rest/two strokes — became a stock rhythm of rock ’n’ roll.

It can be found in Buddy Holly’s “Not Fade Away,” Johnny Otis’s “Willie and the Hand Jive,” Steppenwolf’s “Magic Carpet Ride,” The Who’s “Magic Bus,” Bruce Springsteen’s “She’s the One” and U2’s “Desire,” among hundreds of other songs.

Yet the rhythm was only one element of his best records. In songs like “Bo Diddley,” “Who Do You Love,” “Mona,” “Crackin’ Up,” “Say, Man,” “Ride On Josephine” and “Road Runner,” his booming voice was loaded up with echo and his guitar work came with distortion and a novel bubbling tremelo.

Illustration from Associated Press via Yahoo