 and song lyrics were written by professional and trustworthy poets and songwriters who also were USC members (Mikhail Matusovsky Vasily Lebedev-Kumach, Nikolai Dobronravov, Robert Rozhdestvensky, Mikhail Tanich, Leonid Derbenyov, Yuri Entin, Ilya Reznik, Grigore Vieru).All this is defined as the high demands on the material and the narrow limits of creativity, especially lyrically.The еstrada songs mostly then were about love, nature or about patriotism, ideology and national pride.