What is the most booming instrument? Sure, these are drums. And they are the hardest. Sergey Smirnov, the drummer of Theodor Bastrad, tells in the fourth part of the film about: how to play standing, what is the metronome for, how drums can control the light. And about drum controllers, instruments in the set, cymbals, about tuning used by Theodor Bastard and how to work with metronome and midi synchronization. Comment please, write what you are interested in and we will try to reveal the topics important to you in the next issues.