BG 's big break ( or , in retrospect , his and the band 's " watershed " moment ) , however , came in 1980 , when Artemy Troitsky , the first public Russian rock critic and the enabling figure in many a Russian rock musician 's career , invited Aquarium to perform at the Tbilisi Rock Festival
Tbilisi Rock Festival
Tbilisi Rock Festival (1980)
Boris Grebenshchikov