The Siberian rock scene began in the 1980s, with songwriters such as Egor Letov (Grazhdanskaya Oborona, Omsk), Kalinov most, Alexander Bashlachev and Yanka Dyagileva. Their music varied from simple lo-fi punk to indie rock (sometimes acoustic), and the core of their songs were the lyrics. Many albums were first self-released and distributed among fans via trading, then officially re-released years later. Lyrics were often obscene, and the musicians had major problems with the Soviet administration and KGB. Notable acts not members of any of the three Rock-Clubs but highly popular included rock and roll band Secret.