Based on the experiments and the output results, the function f(x) is selective for concepts related to music and literature, particularly for orchestra-related terms and literature and drama terms like sonnet, opera, and playwright. 

[DESCRIPTION]: The function f(x) takes word inputs and returns a value between 0 and 1, where a value closer to 1 indicates association with the concepts of music (orchestra-related terms) and literature (specifically sonnets, operas, and playwrights).