B.B. King, the legendary blues singer, songwriter, and guitarist, died Thursday in Las Vegas. He was 89 years old.

Attorney Brent Bryson told The Associated Press that King died peacefully in his sleep at 9:40 p.m. local time at his home, where he had been in hospice care. Bryson added that funeral arrangements were being made.

Although King 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.

For most of a career spanning nearly 70 years, Riley B. 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.”

His style was unusual. King didn’t like to sing and play at the same time, so he developed a call-and-response between him and Lucille.

“Sometimes I just think that there are more things to be said, to make the audience understand what I’m trying to do more,” King told The Associated Press in 2006. “When I’m singing, I don’t want you to just hear the melody. I want you to relive the story, because most of the songs have pretty good storytelling.”

A preacher uncle taught him to play, and he honed his technique in abject poverty in the Mississippi Delta, the birthplace of the blues.