Originally Posted by kahless
I don't think that folk music would be a nice choice in that matter.
I'f it's intended for Russian soldiers the best way to greet them in the morning was playing the anthem of USSR (it was played at 6. a.m. every morning on nearly all existing radio channels). Soviet patriotic songs should follow. There are many of them and you can pick any of them.
Here's the nice source
http://www.sovmusic.ru/english/index.php
In fact, any of these songs could open the day on the radio, but I doubt about the folk music.
P.S. Another thing: you should try to avoid anachronisms. It may be possible that some of these songs were written after 1970.