This is actually a horror movie dressed as a film about drumming. It is also as tight as J.K. Simmons' character demands from his musicians. The camera work, the colors, the directing and the acting all make this masterpiece come together. I had chills multiple times when trying to imagine to be in the musicians' s stead for just a moment.
This movie is perfect and the only bad thing I can say about it, is that my small screen does NOT do it justice.