Musicians and promoters opposed the "spiritual and moral" regulation Photo: Zurab Javahadze / TASS On Thursday, December 24, well -known Russian musicians prepared an open letter, which opposed sharply against the bill adopted by the State Duma in the first reading of the bill on the regulation of concert activity. The letter was signed by Boris Grebenshchikov, Zemfira, Gleb Samoilov, Vladimir Shakhrin, Alexei Kortnev, participants of the Quartet and "; In total - more than 20 people.