What kind of music does the film The Godfather II use to imply the godfather's immigration status?

The film Godfather II hints at the godfather's immigration status with a lot of solemn and beautiful background music. According to relevant public information, the film "The Godfather" provides a wonderful soundtrack with a wonderful auditory experience in each paragraph to set off the atmosphere and render the theme, and uses a lot of solemn and beautiful background music to imply the godfather's immigration status.