I attended the première of this at the Rex cinema in Paris last night and 75 minutes later asked myself "what was the point of that?". The whole movie is like the last 10 minutes of most "talking head" documentaries you see on TV (i.e. when the person/subject it's about is summarised by the participants) only it started like that and then continued in the same way. It doesn't really go into much depth (the "death of disco",the rise of House music and his early career are touched upon) but it's far too choppy and seemingly concerned with jumping to the next scene. As a vanity project it works (David seems a nice guy that lots of people like, who (along with his wife) has built up a very successful business and there is some impressive concert footage) but beyond that...I have no idea.
Review of Nothing But the Beat
