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LAS VEGAS — B.B. King, whose scorching guitar licks and heartfelt vocals made him the idol of generations of musicians and fans while earning him the nickname "King of the Blues," died late Thursday. He was 89.

Clark County Coroner John Fudenberg confirmed the death to NBC News. Earlier, attorney Brent Bryson told The Associated Press that King died peacefully in his sleep at his home in Las Vegas.

Although he had continued to perform well into his 80s, the 15-time Grammy winner suffered from diabetes and had been in declining health during the past year. He collapsed during a concert in Chicago last October, later blaming dehydration and exhaustion. He had been in hospice care at his Las Vegas home.

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GALLERY: The Life of a Guitar Legend

Born Riley B. King on Sept. 16, 1925, on a tenant farm near Itta Bena, Mississippi, he was raised by his grandmother after his parents separated and his mother died. He worked as a sharecropper for five years.

For most of a career spanning nearly 70 years, King was not only the undisputed king of the blues but a mentor to scores of guitarists, who included Eric Clapton, Otis Rush, Buddy Guy, Jimi Hendrix, John Mayall and Keith Richards. He recorded more than 50 albums and toured the world well into his 80s, often performing 250 or more concerts a year.

King played a Gibson guitar he affectionately called Lucille with a style that included beautifully crafted single-string runs punctuated by loud chords, subtle vibratos and bent notes.

The result could bring chills to an audience, no more so than when King used it to full effect on his signature song, "The Thrill is Gone." He would make his guitar shout and cry in anguish as he told the tale of forsaken love, then end with a guttural shouting of the final lines: "Now that it's all over, all I can do is wish you well."

King was inducted into the Rock and Roll Hall of Fame in 1987 and received the Songwriters Hall of Fame Lifetime Achievement Award in 1990. He received the Presidential Medal of Freedom from President George W. Bush, gave a guitar to Pope John Paul II and had President Barack Obama sing along to his "Sweet Home Chicago."

He had 15 biological and adopted children. Family members say 11 survive.

— The Associated Press