"I am sadly able to confirm but I have no details at this time," Sonya Kolowrat, his publicist with XL Recordings, said.
The Rock and Foll Hall of Famer wrote and performed his own songs, and even wrote hits, like It's All Over Now, for other musical acts like The Rolling Stones.
He announced last year he had Alzheimer's disease. It wasn't clear if that was the cause of his death.
"With the support of many good doctors, my family, and all of my wonderful fans, I will continue to write and perform and bring the good music to the people for as long as I can," he said of his diagnosis.
Swim Week Miami Beach 2014 [PHOTOS]