He’s playing Miles Davis (he also directed) and the time is the late 1970s — although it’s also the 1960s. Time and space tend to blur in this movie and while the setting is a ’70s boxing match, a couple of figures from Miles’s past — his wife, his younger self — soon swing in to shake things up. She’s running scared and the 1970s Miles is running amok, but the younger Miles, well, there he is, too, playing it cool in the ring. Music is fighting, at least for this pugilist.
Source: The New York Times