Disco Orchestra vs Hudson County

Release info:
Оркестр и вокальная группа "Диско" п/у Игоря Петренко
Orchestra "Disco"
Melodiya 1978 LP С60-11581-82
I have posted the following track already, but now I see it was credited wrong on the cover: this is neither J.Last nor S.Wonder.
Really, its origin is the recording below. I hadn't heard about Hudson County before, but the track is quite rare: for example, AllMusic has no entry about the author.
How did the Russians know about that rare track? They probably heard it on another James Last non-stop mix issued in the USSR in 1976. And thus someone called J.Last became the author.