In the article the author turns to the dramatic discourse of the XX century. namely to the drama of B. Brecht. The author views it as a set of texts in which a system of dramaturgic techniques and principles of theatrical play is described. https://www.roneverhart.com/Behringer-UL-1000G2-Wireless-In-Ear-Monitoring-System-US-584-to-608-MHz-p31393/