Complex sentence: The movie featured the first Soviet musical video with jumping on a trampoline Sofia Rotaru and Mikhail Boyarsky in stretch golden fabrics, turned into a 1981 blockbuster and was watched by 45 million cinema goers in the Soviet Union.
Split into simpler sentences: The movie featured the first Soviet musical video, with Sofia Rotaru and Mikhail Boyarsky jumping on a trampoline in gold stretch fabric. It turned into a 1981 blockbuster and was watched by 45 million cinema-goers in the Soviet Union.