The keyword phrase "patriots day movie music" functions as a noun phrase. The core grammatical subject, or head noun, is "music." This designation is critical as it establishes the central topic of the article.
In this construction, the preceding words act as adjectival modifiers. "Movie" is a noun adjunct, specifying the medium or type of music (i.e., a film score or soundtrack). The proper noun "Patriots Day" further modifies the compound "movie music," specifying the exact film in question. This creates a hierarchical modification where the subject is progressively narrowed: Music Movie Music Patriots Day Movie Music.
Understanding "music" as the head noun dictates the article's focus. The primary subject matter should be the score composed by Trent Reznor and Atticus Ross, the soundtrack selection, and the auditory themes of the film. The terms "Patriots Day" and "movie" serve as the specific context, ensuring the content is precisely targeted at the musical elements of that particular cinematic work.