Instruct: Classify Amazon reviews into positive or negative sentiment
Query: truly worthless

This is so unauthorized, that there are no performances, and not even any recorded music by madonna in the entire film. There are brief snippets from public appearances, but most of the screen time is taken up by interviews with extremely uninsightful, minor journalists. If you know much about Madonna, you won't learn much from this. Simply boring from start to finish. A waste of your time.