Running at two hours and 24 minutes, Kevin Macdonald's documentary almost refuses to leave the screen until the audience gets a deeply exhaustive view of Robert Nesta Marley's journey. Macdonald peppers the first half with lush aerial shots of Jamaica, but he keeps the focus on the artist's life and times. We learn how Marley, the mixed-race son of a black woman and a white man, began his career as a musical artist by getting with fellow future reggae icons Peter Tosh and Bunny Wailer and forming the Wailers. At the height of his fame, when he was selling out venues full of white folks, he even accepted an offer to be the Commodores' opening act, just to get stateside black folk on his side. The film revels in characterizing Marley not only as an influential, groundbreaking artist, teaching the world to sing in a perfect harmony that continues after his death from melanoma, but a man with a relentless, indomitable spirit.