Ahmir “Questlove” Thompson and producer Joseph Patel had already teamed up for the documentary Summer of Soul — a film that played at IndieLisboa and ended up winning the Oscar for Best Documentary in 2022 — and now they’re back with another story rooted in African-American culture. This time, the subject of their gaze is the blazing star that was Sly Stone in the 1960s and 1970s, who later saw his career fall into obscurity. The film goes beyond this musical legend to explore the particular difficulties faced by black artists.