Simplify the following text for a Grade 11 native English-speaking person.
Original: Valery Yakovlevich Leontiev ( ; born 19 March 1949 in Ust-Usa , Komi ASSR , RSFSR , Soviet Union ) is a Soviet and Russian pop singer whose popularity peaked in the early 1980s .
Simplified: Valery Yakovlevich Leontiev ( ; born 19 March 1949 in Ust-Usa , Soviet Union , is a well-known Russian and formerly Soviet singer and Actor .