Chuck Berry, who duck-walked his way into the pantheon of rock'n'roll, has today died at the age of 90.
St. Charles County Police confirmed they responded to a 'medical emergency' at his home near St. Louis, Missouri, at 12.40pm on Saturday.
He was found unresponsive and first responders desperately tried to perform a number of lifesaving techniques.
But the Maybellene, Roll Over Beethoven and Johnny B. Goode singer could not be revived and he was pronounced dead at 1.26pm.
Although Elvis Presley was called the king of rock'n'roll, that crown would have fit just as well on the carefully sculpted pompadour of Charles Edward Anderson Berry. He was present in rock's infancy in the 1950s and emerged as its first star guitarist and lyricist.
He leaves behind his wife Toddy and four children.
Tributes have tonight poured in for the music legend after the news broke earlier this evening.
American singer, Huey Lewis, of Huey Lewis and the News, said: 'Chuck Berry. Maybe the most important figure in all of rock and roll. His music and his influence will last forever - Huey.'