It is an example of artists take elements from the environment to transform and represent their mood and messages.
The answer to this problem is the "MANUSCRIPT ILLUMINATION". Hence, the realism, symbolism and complicated imagery found in Northern Renaissance paintings originated in and was influenced by manuscript illumination. This is embedded and implemented with miniature illustrations, with initials, and with borders. There are also decorations and illustrations of books and letters with pictures and nice designs.
It relies on heavily sounds of brass instruments like the the trombone & trumpet & they also included strings.
