Identyfing a violin piece
 

Hello.

I need help with identifying a piece of violin music played in a film "Gdyby to nie był Everest". I can't post URL yet, so you have to find this film on YouTube on your own. It's uploaded under the exact title, look for the 30:18 time version.

The music is played in 20:29 and also at the end of the film.

Most likely the music is of a Russian composer, but I'm not sure about it.

Thank you! Apparently, it's not Russian as I thought.

The film is about the first winter expedition to Everest, that's why they chose exactly this piece of music. Now it makes sense.