On the Waterfront (1954) is an epic movie. Its soundtrack is composed by Leonard Bernstein and is nominated for an academy award (the movie won 8 in total).
Source: Wikipedia. Impressive, right?
Interestingly, the opening main motif of the soundtrack has a repeating theme (listen below) ♭B-♭A-B—F—
Which sounds extremly like the Russian mournful folk song (start from 22s):