Rock documentaries can be a bit of a tightrope act for filmmakers. On one side of the line are the diehard fans, the ones who have followed the band for years and obsessively researched every last detail about their favorite musicians. On the other are the casual fans and general audiences that may barely know the subject at all. It can be hard to cater to both sides, and often directors have to choose who they want to favor: do […]