Jazz singer and playwright Oscar Brown has died in Chicago aged 78 after a short illness, his son has announced.
The musician performed alongside greats such as Dizzy Gillespie, Miles Davis, John Coltrane and Cannonball Adderley.
Brown also wrote more than a dozen plays and musicals, and was active in the civil rights movement in the 1960s.
The performer made two unsuccessful attempts to run for political office, once for the Illinois legislature and later for the US Congress.
'Wealth of material'
Brown had emergency surgery in mid-April after suffering the bone infection osteomyelitis.
Before the surgery, he complained of severe pain and suffered paralysis to both of his legs.
"Although we will miss him deeply, he has left a wealth of material that will continue to touch the world," daughter Maggie Brown said.
Her father wrote songs such as The Snake and Signifyin' Monkey and put lyrics to jazz instrumentals by Miles Davis, Herbie Hancock and Nat Adderley.