I’ve watched this Miles Ahead teaser three times — nice vibe, feels authentic. But I’ve been listening with good headphones, and I’m telling you I can’t understand anything that Don Cheadle is saying except when he says “can we record this?” and a couple of times when he says “yeah.” His Miles voice is a little too raspy and mumbly. If this persists in the watching of the actual film in a theatre or screening room, it’ll be a problem.