"Performed for the first time in 1962 at the International Festival Of Song in Sopot by Russian singer Tamara Miansarova it earned the first prize for her there and immediately became widespread in the USSR and some other countries." (From Wikipedia).

Tamara Miansarova's "Ïóñòü âñåãäà áóäåò ñîëíöå" is at YouTube. See also "Related videos."