Miles Davis: Birth of the Cool

I have mixed feelings about this work.... On the one hand, the quality of its production is unmatched. The videos and interviews are exemplary and you can even follow the musician's life to a certain extent. However, the management seems lost to me and even makes imprecise and tasteless decisions. The narrator, for example, gets tired and the choice to replace him with a voice actor is very weak and wrong. The best way for a documentary is to expose the personality's opinions without confusing the viewer. I want to know if he said that and not convert it into a context or a cut from the director because it distorts the facts and becomes just an opinion. I understand that a musician's life is vast with interpretations and stories. But, in this case, it is better to be structural and put it in chapters. The intention is valid, but the ending ended abruptly, revealing a symptom in the entire film. Therefore, this documentary is just an introduction to the artist's life and work and should not be taken seriously.