Most music careers slowly but surely go down.
I think music docs could turn off some people.
There are a few really fantastic stories left, and that kind of gives you some inspiration to find even new ones.
Success is not only one thing. Its not only having a nice house in Beverly Hills and driving a nice Mercedes.
My specialty is two things: music or really strange stories.
I dont think Sugar Man is a music doc any more than The Social Network is about computers. It just happens to have the best soundtrack ever.