Here's the thing: you can be a superb, meticulous, demanding music teacher without being a hostile jerk. You can also be a driven, determined, even obsessed music student, bent on creative brilliance and perfection, without being inhuman or ruthless. In a movie supposedly about "what it takes" to achieve true excellence in performance, we never saw Fletcher teach, or drummer Miles Teller's ambitious character, Nieman, learn anything about music via guidance, example or instruction. Everything that was accomplished happened via psychological manipulation: Terror. Lies. Tricks. Bodily abuse. Even, God help us, suicide.