The main point of the keyword term is the word "concerts," which functions as a noun. The entire phrase operates as a noun phrase, where "concerts" is the head noun, establishing the core subject of the article.
In this grammatical construction, "september 11 2025" acts as an adjectival modifier. It is a multi-word unit specifying the date, which describes and narrows the scope of the noun "concerts." The modifier answers the question "Which concerts?" or "When are the concerts?" By identifying "concerts" as the head noun, the primary focus is correctly placed on the events themselves, rather than on the date as a standalone subject.
This determination is critical because it dictates that the article's central theme must be the musical performances. All content, including details about artists, venues, genres, and significance, should relate directly back to the events (the noun). The date serves as a precise temporal filter, defining the specific set of events to be discussed. Therefore, the article's structure and content should be built around the subject of musical events happening on that particular day.
